| Size | Price | Stock | Qty |
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| 5mg |
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| 10mg |
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| 25mg |
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| Other Sizes |
Purity: ≥98%
| Targets |
- TRAF6 (TNF receptor-associated factor 6): Tabersonine suppresses K63-linked polyubiquitination of TRAF6. [1]
- NLRP3 (NACHT, LRR, and PYD domains-containing protein 3): IC50 = 0.71 μM (for inhibiting IL-1β production in BMDMs). Tabersonine directly binds to the NACHT domain of NLRP3. [2] - PI3K/Akt pathway: Tabersonine inhibits Akt phosphorylation (Ser473). [3] Tabersonine targets TRAF6 (no IC50/Ki reported) [1]; and NLRP3 NACHT domain (IC50 = 0.71 μM for inhibition of IL-1β production in LPS+ATP-stimulated BMDMs) [2]. |
|---|---|
| ln Vitro |
- ALI model (Macrophages): Tabersonine (1, 3, 10 μM) had no cytotoxicity in BMDMs up to 10 μM. It reduced LPS-induced iNOS protein level and NO release in a dose-dependent manner. It also reduced the mRNA and protein levels of TNF-α, IL-6, and IL-1β in LPS-stimulated BMDMs. Tabersonine suppressed LPS-induced phosphorylation of p65 NF-κB, IκB-α degradation, and NF-κB transcriptional activity. It also suppressed the phosphorylation of p38 MAPK and its downstream kinase MK2, with weak effects on ERK and JNK. Tabersonine (10 μM) significantly reduced K63-linked polyubiquitination of TRAF6 but had no effect on K48-linked ubiquitination. [1]
- NLRP3 inflammasome (Macrophages): Tabersonine potently inhibited LPS+ATP-induced IL-1β production in BMDMs (IC50 = 0.71 μM) and THP-1 cells. It suppressed caspase-1 (p20) cleavage and IL-1β secretion dose-dependently (1, 5, 10 μM). It had no effect on TNF-α or IL-6 levels, nor on NLRP3 or pro-IL-1β expression, indicating an NF-κB-independent mechanism. Tabersonine inhibited LDH release, pyroptosis (GSDMD-NT), and ASC speck formation and oligomerization. It directly bound to NLRP3, protecting it from pronase degradation in DARTS assay, specifically binding to the NACHT domain. Tabersonine inhibited NLRP3 self-oligomerization and its ATPase activity. It blocked the NLRP3-ASC interaction but not the NLRP3-NEK7 interaction. [2] - Hepatocellular carcinoma (HCC): Tabersonine inhibited the viability of SMMC7721 (IC50 = 7.89 ± 1.2 μM), Bel7402 (IC50 = 5.07 ± 1.4 μM), and HepG2 (IC50 = 12.39 ± 0.7 μM) cells. It significantly inhibited colony formation in all three cell lines (6-30 μM). Tabersonine induced apoptosis in HepG2 cells, as shown by Hoechst 33258, AO/EB, and Annexin V-FITC/PI staining (apoptotic rate reached 27% at 30 μM). It increased cleaved Caspase-3 and cleaved PARP levels, reduced mitochondrial membrane potential (JC-1 staining), increased the Bax/Bcl-2 ratio, promoted cytochrome c release, and activated cleaved Caspase-9. Tabersonine downregulated p-Akt (Ser473) without affecting total Akt, and synergized with the PI3K inhibitor LY294002 to further inhibit p-Akt. It also increased Fas and FasL expression, decreased Caspase-8 and Bid levels, indicating activation of the death receptor pathway. [3] [1] In BMDMs, Tabersonine (1-10 μM) inhibited LPS-induced iNOS protein expression and NO production in a dose-dependent manner. It also reduced mRNA and protein levels of TNF-α, IL-6, and IL-1β. Mechanistically, it suppressed phosphorylation of NF-κB p65, IκB-α degradation, p38 MAPK and MK2 phosphorylation, without affecting ERK1/2 and JNK. It inhibited K63-linked polyubiquitination of TRAF6 in HEK293T cells. [2] In BMDMs and THP-1 cells, Tabersonine inhibited NLRP3 inflammasome activation induced by ATP, nigericin, or alum, with IC50 of 0.71 μM for IL-1β. It reduced caspase-1 p20 cleavage, IL-1β secretion, ASC speck formation, and ASC oligomerization. It did not affect TNF-α or IL-6 production, nor NLRP3 or pro-IL-1β expression. It inhibited GSDMD cleavage and LDH release, indicating suppression of pyroptosis. It reduced NLRP3-ASC interaction but not NLRP3-NEK7 interaction. DARTS and domain mapping revealed binding to NLRP3 NACHT domain. It inhibited NLRP3 oligomerization and ATPase activity. Molecular docking suggested interactions with Phe297, Arg335, Lys322, and Ile295. |
| ln Vivo |
- ALI model (LPS-induced): In C57BL/6 mice, intraperitoneal injection of tabersonine (10, 20, 40 mg/kg) prior to intratracheal LPS (5 mg/kg) significantly attenuated lung pathological injury, reduced total cells, neutrophils (Ly-6G+), and protein concentration in BALF, decreased MPO activity, and lowered TNF-α, IL-6, and IL-1β mRNA in lung tissue and protein levels in serum. [1]
- NLRP3-driven disease models: In an alum-induced peritonitis model, oral administration of tabersonine (10, 20, 40 mg/kg) in mice significantly decreased total cells, IL-1β levels, and monocyte/neutrophil counts in peritoneal fluid. In an LPS-induced ALI model, oral tabersonine (10 mg/kg) in WT mice, but not in Nlrp3KO mice, reduced lung pathological injury, wet/dry ratio, protein and total cells in BALF, and IL-1β (p20, mature) levels. In a sepsis model (E. coli infection), tabersonine (10 mg/kg) pretreatment significantly increased the survival rate of WT mice to 60% but had no effect on Nlrp3KO mice. [2] - HCC xenograft model: In BALB/c nude mice bearing HepG2 xenografts, oral administration of tabersonine (25 or 50 mg/kg/day for 3 weeks) significantly inhibited tumor growth and tumor weight without affecting body weight. TUNEL staining and cleaved Caspase-3 immunofluorescence in tumor tissues confirmed increased apoptosis. [3] [1] In a murine LPS-induced ALI model, intraperitoneal administration of Tabersonine (10, 20, 40 mg/kg) significantly attenuated lung pathological injury, reduced BALF protein concentration, MPO activity, neutrophil infiltration, and preserved alveolar macrophages. It also decreased mRNA and serum protein levels of TNF-α, IL-6, and IL-1β. [2] In alum-induced peritonitis, oral Tabersonine (10, 20, or 40 mg/kg) reduced total peritoneal cells, IL-1β levels, and monocyte/neutrophil infiltration. In LPS-induced ALI, oral Tabersonine (10 mg/kg, three times daily) alleviated lung histopathology, wet/dry ratio, BALF protein and total cells, and decreased IL-1β and p20 levels in lung tissue. These effects were absent in Nlrp3 knockout mice. In a sepsis model, intraperitoneal Tabersonine (10 mg/kg) prior to E. coli infection improved survival rate to 60% in WT mice, but no additional benefit in Nlrp3 KO mice. |
| Enzyme Assay |
- ATPase activity assay for NLRP3: Human NLRP3 immunoprecipitated from transfected HEK293T cells was incubated with different concentrations of tabersonine for 40 min. Ultra-pure ATP was then added to the reaction buffer and incubated at 37°C for 40 min. The amount of ATP converted to ADP was determined using a luminescent ADP detection kit. The data showed that tabersonine suppressed NLRP3 ATPase activity. [2]
- Drug Affinity Responsive Target Stability (DARTS): BMDMs were primed with LPS for 3h, or HEK-293T cells were harvested 24h after transfection. Total cell lysates were incubated with tabersonine overnight at 4°C. Pronase was added and incubated for 5 min at room temperature. The reaction was stopped by adding SDS loading buffer and heating. Samples were analyzed by immunoblotting. Tabersonine protected NLRP3, but not ASC, from pronase-driven hydrolysis. Domain mapping showed it specifically protected the NACHT domain. [2] [1] Tabersonine's effect on TRAF6 ubiquitination was assessed by co-immunoprecipitation: HEK293T cells co-transfected with Myc-TRAF6 and HA-ubiquitin (or HA-UbK63 or HA-UbK48) were treated with 10 μM Tabersonine for 6 h. Cell lysates were immunoprecipitated with anti-Myc antibody and immunoblotted with anti-HA or anti-Myc to detect polyubiquitination. [2] DARTS assay: Lysates from LPS-primed BMDMs or HEK293T cells expressing FLAG-tagged NLRP3 or its domains (PYD, NACHT, LRR) were incubated with Tabersonine (10 μM) overnight, then digested with pronase (25 ng/μg protein) for 5 min at room temperature, and analyzed by Western blotting. ATPase activity assay: Human NLRP3 immunoprecipitated from HEK293T cells was incubated with various concentrations of Tabersonine (0-10 μM) for 40 min, then ATP was added and incubated at 37°C for 40 min. The amount of ADP produced was measured using a luminescent ADP-Glo kinase assay. Molecular docking: The interaction between Tabersonine and NLRP3 NACHT domain (PDB 6NPY) was simulated using AutoDock 4.2.6 with a grid box and Lamarckian genetic algorithm; key interacting residues identified include Phe297, Arg335, Lys322, and Ile295. |
| Cell Assay |
- Cell Viability (MTT): For BMDMs, cells were plated in 96-well plates, treated with tabersonine (0-10 μM) for 24h, then MTT was added for 4h. Absorbance was read at 490nm. Tabersonine had no cytotoxicity up to 10 μM. [1][2]
For HCC cells (HepG2, SMMC7721, Bel7402), cells were seeded in 96-well plates, treated with tabersonine (6-30 μM) for 24h, then MTT was added for 4h. Absorbance was read at 450nm. IC50 values were calculated. [3] - Colony Formation Assay: HCC cells were seeded in 6-well plates, treated with tabersonine (6-30 μM). Medium was replaced every 3 days. After two weeks, colonies were fixed with 4% paraformaldehyde, stained with 0.2% crystal violet, and counted (diameter >75 μm). Tabersonine significantly inhibited colony formation. [3] - Apoptosis Detection (Flow Cytometry): HepG2 cells were treated with tabersonine (6-30 μM) for 18h, then stained with Annexin V-FITC and PI. The apoptotic rate was analyzed by flow cytometry. [3] For BMDMs, cells were stained with Annexin V-FITC and PI after LPS+ATP treatment with or without tabersonine. [1] - Mitochondrial Membrane Potential (JC-1): HepG2 cells were treated with tabersonine (6-30 μM) for 24h, then stained with JC-1. Changes from red (high potential) to green (low potential) were observed by fluorescence microscopy. [3] - Western Blotting: Cells or tissues were lysed, and proteins were separated by SDS-PAGE, transferred to membranes, and probed with specific antibodies for various targets (e.g., iNOS, p-p65, p-p38, IL-1β, cleaved Caspase-3, Bax, Bcl-2, p-Akt, etc.). [1][2][3] - Quantitative Real-time PCR (qRT-PCR): Total RNA was extracted from BMDMs or lung tissues. cDNA was synthesized, and gene expression of TNF-α, IL-6, and IL-1β was measured using SYBR Green real-time PCR. [1] - ELISA: Supernatants from cell cultures, BALF, peritoneal fluids, or serum were collected. The levels of IL-1β, TNF-α, and IL-6 were measured using commercial ELISA kits. [1][2] - Immunofluorescence (IF): BMDMs were fixed, permeabilized, and stained with antibodies against caspase-1 or ASC. Nuclear counterstaining was performed with DAPI. Images were captured by confocal microscopy to visualize ASC specks or caspase-1 activation. [2] For tumor tissues, frozen sections were stained with anti-cleaved Caspase-3 antibody. [3] - Luciferase Reporter Assay: THP-1 cells stably expressing NF-κB luciferase reporter were treated with tabersonine (1, 3, 10 μM) for 1h, then stimulated with LPS (100 ng/mL) for 6h. Luciferase activity was measured. Tabersonine significantly reduced LPS-induced NF-κB activation. [1] [1] BMDMs were isolated from C57BL/6 mice and cultured in DMEM with 10% FBS and 20 ng/mL M-CSF for 6 days. Cell viability was measured by MTT assay after 24 h treatment with Tabersonine (0-10 μM). NO production was determined by Griess reagent. Cytokine mRNA was quantified by RT-PCR using SYBR Green, and protein levels by ELISA. Western blotting was performed using antibodies against iNOS, phosphorylated and total p65, IκB-α, p38, JNK, ERK, MK2. Immunofluorescence for p65 nuclear translocation was conducted in Raw 264.7 cells using anti-p65 and DAPI. [2] BMDMs were cultured with L929-conditioned medium for 7 days. THP-1 cells were differentiated with PMA. For inflammasome activation, cells were primed with LPS (500 ng/mL for BMDMs, 100 ng/mL for THP-1) for 3 h, then treated with Tabersonine (0-10 μM) for 30 min, followed by ATP (2.5 mM, 0.5 h), nigericin (10 μM, 0.5 h), or alum (300 μg/mL, 4 h). IL-1β, TNF-α, IL-6 in supernatants were measured by ELISA. Western blotting detected IL-1β, caspase-1 p20, GSDMD, NLRP3, ASC. ASC speck and caspase-1 activation were visualized by immunofluorescence. LDH release was measured using a cytotoxicity assay kit. ASC oligomerization was assessed by cross-linking with BS3 and Western blot. NLRP3 oligomerization was analyzed by semi-denaturing agarose gel electrophoresis (SDD-AGE). |
| Animal Protocol |
- ALI Model (Zhang et al. 2018): C57BL/6 mice were intraperitoneally (i.p.) injected with solvent control, dexamethasone (5 mg/kg), or tabersonine (10, 20, 40 mg/kg). One hour later, LPS (5 mg/kg) was administered intratracheally to induce ALI. Mice were euthanized 6h later for sample collection. Tabersonine was dissolved in a vehicle (H2O:ethanol:polyoxyethylene hydrogenated castor oil = 8:1:1). [1]
- Peritonitis Model (Xu et al. 2023): 10-week-old male C57BL/6 mice were treated via gavage with tabersonine (10, 20, or 40 mg/kg) dissolved in 0.5% carboxymethylcellulose sodium (CMC-Na) or vehicle. This was followed by intraperitoneal injection of Alum (1 mg per mouse). After 6h, mice were sacrificed, and peritoneal lavage was performed. [2] - ALI Model (Xu et al. 2023): 10-week-old male C57BL/6 and Nlrp3KO mice were intragastrically administered tabersonine (10 mg/kg) dissolved in 0.5% CMC-Na three times daily. This was followed by intratracheal instillation of LPS (5 mg/kg). After 6h, mice were sacrificed. [2] - Sepsis Model (Xu et al. 2023): 10-week-old male C57BL/6 and Nlrp3KO mice were injected intraperitoneally with tabersonine (10 mg/kg) or vehicle. This was followed by intraperitoneal injection of E. coli (1×10^9 CFU/mouse) in PBS. Mouse survival was recorded every 6h for 48h. [2] - HCC Xenograft Model (Li et al. 2024): 2×10^7 HepG2 cells were injected subcutaneously into male BALB/c nude mice. After three days, tabersonine (25 or 50 mg/kg) was administered by gavage daily for three consecutive weeks. Tumor volume was measured every three days. After three weeks, mice were euthanized, and tumors were collected for analysis. [3] [1] Male C57BL/6 mice (8-10 weeks) were randomly divided into groups. Tabersonine was dissolved in a vehicle of H2O:ethanol:polyoxyethylene hydrogenated castor oil (8:1:1) and administered intraperitoneally at 10, 20, or 40 mg/kg. Dexamethasone (5 mg/kg) was used as positive control. LPS (5 mg/kg in PBS) was given intratracheally. Mice were euthanized 6 h later; BALF and lung tissues were collected for analysis. [2] For peritonitis, male C57BL/6 mice (10 weeks) received Tabersonine (10, 20, or 40 mg/kg) in 0.5% CMC-Na by gavage 1 h before intraperitoneal injection of alum (1 mg/mouse). Peritoneal lavage was performed 6 h later. For ALI, mice received Tabersonine (10 mg/kg in 0.5% CMC-Na) intragastrically three times daily before intratracheal LPS (5 mg/kg), and samples were collected 6 h later. For sepsis, mice received intraperitoneal Tabersonine (10 mg/kg) 1 h before intraperitoneal injection of live E. coli (1×10^9 CFU/mouse), and survival was monitored for 48 h. Nlrp3 knockout mice were used for comparison. |
| Toxicity/Toxicokinetics |
- In the HCC xenograft model, treatment with tabersonine (25 or 50 mg/kg/day for 3 weeks) did not cause any significant effect on the overall body weight of the nude mice, indicating no overt toxicity. [3]
- In the ALI and peritonitis models, no adverse effects on mice were reported at the doses used (up to 40 mg/kg i.p. or oral). [1][2] |
| References |
[1]. Tabersonine attenuates lipopolysaccharide-induced acute lung injury via suppressing TRAF6 ubiquitination. Biochem Pharmacol. 2018 Aug;154:183-192.
[2]. Tabersonine, a natural NLRP3 inhibitor, suppresses inflammasome activation in macrophages and attenuate NLRP3-driven diseases in mice. Acta Pharmacol Sin. 2023 Jun;44(6):1252-1261. [3]. Tabersonine Induces the Apoptosis of Human Hepatocellular Carcinoma In vitro and In vivo. Anticancer Agents Med Chem. 2024;24(10):764-772. |
| Additional Infomation |
- Background: Tabersonine is a natural indole alkaloid from Catharanthus roseus. It is a key precursor in the synthesis of the anticancer drugs vincristine and vinblastine. [1][2][3]
- Mechanism in ALI (Zhang et al. 2018): Tabersonine ameliorates LPS-induced acute lung injury by suppressing the K63-linked polyubiquitination of TRAF6, which in turn inhibits the downstream NF-κB and p38/MK2 signaling pathways, leading to reduced production of pro-inflammatory mediators. [1] - Mechanism in NLRP3-driven diseases (Xu et al. 2023): Tabersonine is a direct NLRP3 inhibitor. It binds to the NACHT domain of NLRP3, inhibiting its ATPase activity and self-oligomerization, thereby blocking inflammasome assembly, ASC speck formation, and subsequent caspase-1 activation and IL-1β maturation. [2] - Mechanism in Hepatocellular Carcinoma (Li et al. 2024): Tabersonine induces apoptosis in HepG2 cells through both the mitochondrial pathway (by reducing membrane potential, increasing Bax/Bcl-2 ratio, and releasing cytochrome c) and the death receptor pathway (by upregulating Fas/FasL and activating Caspase-8). It also inhibits the PI3K/Akt signaling pathway. This study is the first to demonstrate these dual apoptotic mechanisms for tabersonine in liver cancer. [3] Tabersonine is a monoterpenoid indole alkaloid with cytotoxic activity. It can be used as an antitumor drug and is also a metabolite. It is an alkaloid ester, a monoterpenoid indole alkaloid, a methyl ester, and an organic heteropentane compound. It is the conjugate base of Tabersonine(1+). Tabersonine has been reported to exist in Alstonia yunnanensis, Tabernaemontana catharinensis, and other organisms with relevant data. [1] Tabersonine is a natural indole alkaloid from Catharanthus roseus. Its anti-inflammatory effect is mediated by suppressing TRAF6 K63-linked ubiquitination, which leads to inhibition of NF-κB and p38/MK2 signaling, reducing pro-inflammatory cytokine production and neutrophil infiltration in ALI. [2] Tabersonine directly binds to the NACHT domain of NLRP3, inhibiting its ATPase activity and oligomerization, thus blocking inflammasome assembly. This action is independent of NF-κB priming. The compound shows protective effects in NLRP3-driven diseases including peritonitis, ALI, and sepsis. It represents a new lead scaffold for NLRP3 inhibitor design. |
| Molecular Formula |
C21H25CLN2O2
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|---|---|
| Molecular Weight |
372.8884
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| Exact Mass |
336.183
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| Elemental Analysis |
C, 69.46; H, 6.36; N, 7.36; O, 16.82
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| CAS # |
4429-63-4
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| Related CAS # |
Tabersonine hydrochloride;29479-00-3
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| PubChem CID |
20485
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| Appearance |
Light yellow to yellow solid powder
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| Density |
1.3±0.1 g/cm3
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| Boiling Point |
488.7±45.0 °C at 760 mmHg
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| Flash Point |
249.4±28.7 °C
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| Vapour Pressure |
0.0±1.2 mmHg at 25°C
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| Index of Refraction |
1.652
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| LogP |
3.57
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| Hydrogen Bond Donor Count |
1
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| Hydrogen Bond Acceptor Count |
4
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| Rotatable Bond Count |
3
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| Heavy Atom Count |
25
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| Complexity |
669
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| Defined Atom Stereocenter Count |
3
|
| SMILES |
CC[C@]12CC(=C3[C@@]4([C@H]1N(CC4)CC=C2)C5=CC=CC=C5N3)C(=O)OC
|
| InChi Key |
FNGGIPWAZSFKCN-ACRUOGEOSA-N
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| InChi Code |
InChI=1S/C21H24N2O2/c1-3-20-9-6-11-23-12-10-21(19(20)23)15-7-4-5-8-16(15)22-17(21)14(13-20)18(24)25-2/h4-9,19,22H,3,10-13H2,1-2H3/t19-,20-,21-/m0/s1
|
| Chemical Name |
methyl (1R,12R,19S)-12-ethyl-8,16-diazapentacyclo[10.6.1.01,9.02,7.016,19]nonadeca-2,4,6,9,13-pentaene-10-carboxylate
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| Synonyms |
Tabersonine; 4429-63-4; Tabersonin; MN955K48NB; Aspidospermidine-3-carboxylic acid, 2,3,6,7-tetradehydro-, methyl ester, (5alpha,12beta,19alpha)-
|
| HS Tariff Code |
2934.99.9001
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| Storage |
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month Note: This product requires protection from light (avoid light exposure) during transportation and storage. |
| Shipping Condition |
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
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| Solubility (In Vitro) |
DMSO : ~25 mg/mL (~74.31 mM)
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|---|---|
| Solubility (In Vivo) |
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.
Injection Formulations
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline)(e.g. IP/IV/IM/SC) *Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution. Injection Formulation 2: DMSO : PEG300 :Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO → 900 μL Corn oil) Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals). View More
Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO → 900 μL (20% SBE-β-CD in saline)] Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium) Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals). View More
Oral Formulation 3: Dissolved in PEG400  (Please use freshly prepared in vivo formulations for optimal results.) |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 2.6818 mL | 13.4088 mL | 26.8176 mL | |
| 5 mM | 0.5364 mL | 2.6818 mL | 5.3635 mL | |
| 10 mM | 0.2682 mL | 1.3409 mL | 2.6818 mL |
*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.
Calculation results
Working concentration: mg/mL;
Method for preparing DMSO stock solution: mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.
Method for preparing in vivo formulation::Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.
(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
(2) Be sure to add the solvent(s) in order.