| ln Vivo |
A1480LS (1-20 mg/kg; orally; twice) produced dose-dependent relief of mechanoalgae hyperalgesia in a CFA-induced rat model of inflammatory pain by inhibiting peripheral DAGL without altering 2-AG levels in the brain, with an ED50 of 7.7 mg/kg [1]. A1480LS (15, 20 mg/kg; orally) rapidly relieved and sustained the inhibition of paclitaxel-induced mechanoalgae hyperalgesia in rats, remaining effective even after 5 days of continuous administration. In addition, it reversed and maintained CCI-induced mechanoalgae hyperalgesia in rats to the level of the sham-operated group, while restoring 2-AG and AA levels caused by sciatic nerve injury to normal without affecting the levels of these lipids in the brain [1]. A1480LS (1 mg/kg; intravenously) selectively inhibited the activity of HT and WDR-like neurons in the dorsal horn of the spinal cord in anesthetized CCI rats without affecting the activity of LTMRs, indicating that it inhibits spinal nociceptive input [1]. A1480LS (8-30 mg/kg; orally) did not affect pentylenetetrazole (PTZ)-induced epilepsy susceptibility or brain 2-AG levels in rats and was well tolerated in rats, with only a slight, transient decrease in abdominal muscle tone observed in some animals; these results suggest that it does not pose a risk of central nervous system-induced epilepsy [1].
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| Animal Protocol |
Animal/Disease Models:Sprague Dawley mice (male, 176-206 g, paw-injected with CFA)[1]
Doses: 1 mg/kg; 2.5 mg/kg; 5 mg/kg; 10 mg/kg; 20 mg/kg Route of Administration: Oral; Two-dose administration (2 hours before CFA injection, 24 hours after CFA injection) Experimental Results: Four hours after the second dose, the mechanical withdrawal threshold increased in a dose-dependent manner, with an ED50 of 7.7 mg/kg. At a dose of 20 mg/kg, the mean plasma concentration reached 1.1 μM (free plasma concentration = 1.5 nM), and the EC50 for inhibiting hyperalgesia was 0.22 μM. It inhibited renal DAGLβ activity and reduced renal 2-AG concentration in a dose-dependent manner. At doses of 10 and 20 mg/kg, it caused partial inhibition of DAGLα/β in the brain, but did not lead to depletion of 2-AG in the brain. Animal/Disease Models:Sprague Dawley mice (male, intraperitoneal injection of paclitaxel, 1 mg/kg, once daily for 5 days)[1] Doses: 15 mg/kg (single dose; to establish a hyperalgesia model); 15 mg/kg (repeated dose; to maintain antihyperalgesia effect) Route of Administration: Oral; single dose on day 7; once daily for 5 days (days 15-18) Experimental Results: A single oral dose of 15 mg/kg on day 7 reduced established mechanical hyperalgesia 4 hours after administration. Repeated administration of 15 mg/kg once daily from day 15-18 maintained a significant antihyperalgesia effect for 5 days, comparable to duloxetine. Animal/Disease Models:Sprague Dawley (male, weight 200-220 g at surgery; weight 233-289 g at administration, chronic compression injury of the left sciatic nerve) [1] Doses: 20 mg/kg (repeated administration; reversal of hyperalgesia); 20 mg/kg (single administration; lipid analysis) Route of Administration: Oral; once daily for 5 days (days 14-18); single administration 14 days after CCI Experimental Results: Repeated administration of 20 mg/kg reversed hyperalgesia and restored the von Frey threshold to the sham surgery level, with efficacy comparable to naproxen and pregabalin. A single administration of 20 mg/kg reduced the concentration of 2-AG in the damaged sciatic nerve and restored the concentration of AA to normal; CCI resulted in a 7-fold increase in the concentration of 2-AG and a 2-fold increase in the concentration of AA. Animal/Disease Models:Sprague Dawley mice (male, 250-315 g, chronic compression injury of the left sciatic nerve, right jugular vein catheter implanted) [1] Doses: 0.1 mg/kg; 0.3 mg/kg; 1 mg/kg Route of Administration: Intravenous injection; single bolus injection after baseline vector recording Experimental Results: Dose-dependent high-threshold (HT) and wide dynamic range-like (WDR-like) single-cell response modulation was produced, with significant inhibition at 1 mg/kg. Low-threshold mechanoreceptor (LTMR) single-cell activity was not modulated at 1 mg/kg. Animal/Disease Models:Sprague Dawley (male, 208-263 g, subcutaneous injection of pentylenetetrazol 80 mg/kg) [1] Doses: 8 mg/kg; 16 mg/kg; 30 mg/kg Route of Administration: Oral; single dose, 4 hours before pentylenetetrazol injection Experimental Results: No changes were made to seizure latency or incidence at any of the tested doses. No changes were made to 2-AG levels in the brain after administration. |
| References |
| Appearance |
Typically exists as solids at room temperature
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| 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 |
| 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) |
May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples
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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.) |
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.