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PD173074

Alias: PD 173074; PD-173074; 219580-11-7; 1-(tert-Butyl)-3-(2-((4-(diethylamino)butyl)amino)-6-(3,5-dimethoxyphenyl)pyrido[2,3-d]pyrimidin-7-yl)urea; 1-tert-butyl-3-[2-[4-(diethylamino)butylamino]-6-(3,5-dimethoxyphenyl)pyrido[2,3-d]pyrimidin-7-yl]urea; MFCD08705327; 1-tert-butyl-3-[2-{[4-(diethylamino)butyl]amino}-6-(3,5-dimethoxyphenyl)pyrido[2,3-d]pyrimidin-7-yl]urea; PD173074
Cat No.:V0513 Purity: ≥98%
PD173074 (PD-173074) is a novel, potent,cell permeable and selective FGFR1 inhibitor with potential antineoplastic activity.
PD173074
PD173074 Chemical Structure CAS No.: 219580-11-7
Product category: VEGFR
This product is for research use only, not for human use. We do not sell to patients.
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Purity & Quality Control Documentation

Purity: ≥98%

Product Description

PD173074 (PD-173074) is a novel, potent, cell permeable and selective FGFR1 inhibitor with potential antineoplastic activity. In cell-free experiments, it inhibits VEGFR2 with an IC50 of 100-200 nM and FGFR1 with an IC50 of ~25 nM. It also exhibits ~1000-fold selectivity for FGFR1 over PDGFR and c-Src. In vitro, PD173074 demonstrates strong anti-proliferative activity against a variety of cancer cell lines, including UM-UC-14 and MGHU3, which expressed FGFR3 protein mutations.

Biological Activity I Assay Protocols (From Reference)
Targets
FGFR1 (IC50 = 25 nM); VEGFR2 (IC50 = 100 nM)
ln Vitro
PD173074 is an FGFR1 ATP-competitive inhibitor with a Ki of approximately 40 nM. Another potent VEGFR2 inhibitor is PD173074. With 1000-fold or higher IC50 values, PD173074 weakly inhibits the activities of Src, InsR, EGFR, PDGFR, MEK, and PKC in comparison to FGFR1. With an IC50 of 1–5 nM and 100–200 nM, respectively, PD173074 inhibits the autophosphorylation of FGFR1 and VEGFR2 in a dose-dependent manner.[1] With an IC50 of 12 nM, PD173074 exhibits dose-dependent inhibition of FGF-2 promotion of granule neuron survival, 1,000 times more potent than SU 5402.[2] In oligodendrocyte (OL) lineage cells, PD173074 specifically blocks the effects of FGF-2 on proliferation, differentiation, and MAPK activation.[3] PD173074 exhibits efficacy against both FGFR3 mutations and the WT receptor in multiple myeloma (MM) cell lines. Moreover, PD173074 has an IC50 of approximately 5 nM and strongly suppresses the dose-dependent autophosphorylation of FGFR3. With an IC50 of less than 20 nM, PD173074 treatment significantly lowers the viability of FGFR3-expressing KMS11 and KMS18 cells. The expression of FGFR3 is closely associated with PD173074's inhibition of aFGF-stimulated MM cell growth. Treatment with PD173074 totally eliminates NIH 3T3 transformation caused by Y373C FGFR3, but not Ras V12. This indicates that PD173074 does not have a non-specific cytotoxic effect and instead targets FGFR3-mediated cell transformation. KMS11 and KMS18 cells are also induced to functionally mature by PD173074.[4]
ln Vivo
PD173074 can be administered to mice at a dose-dependent rate of either 1 mg/kg/day or 2 mg/ka/day to effectively block angiogenesis induced by VEGF or FGF, with no apparent toxicity.[1] PD173074 prevents NIH 3T3 cells transfected with mutant FGFR3 from growing in vivo in nude mice. In a KMS11 xenograft myeloma model, inhibiting FGFR3 with PD173074 slows the growth of tumors and improves mice survival.[4] Compared to control sham-treated animals, oral administration of PD173074 in the H-510 xenograft increases median survival by blocking tumor growth in a manner similar to that observed with single-agent cisplatin administration. Fifty percent of the mice receiving PD173074 in H-69 xenografts experience full responses that last longer than six months. These effects do not result from disruption of the tumor vasculature; rather, they are correlated with increased apoptosis in removed tumors.[5]
Oral administration of PD173074 inhibits H510 and H69 tumor growth and potentiates cisplatin effects in nude mice. [5]
[18F]FLT-PET is an early predictor of response to PD173074 in vivo[5]
To determine if we could predict response to PD173074 using an in vivo imaging technique applicable to patients in the clinic, we next used [18F]FLT-PET to monitor intratumoral proliferation. Animals bearing subcutaneous H69 xenografts in the neck were given diluent with or without PD173074 by oral gavage daily and injected with [18F]FLT-PET before imaging at day 8 and 14. Figure 5A shows representative [18F]FLT-PET imaging from one control and one PD173074-treated animal before and 14 days into administration of the treatment. Analysis of [18F]FLT-PET results by the fractional retention time, a parameter independent of tumor size, and less dependent on perfusion, showed that PD173074 administration reduced cellular proliferation (Fig. 5B). In the same tumors, growth inhibition was shown by calliper measurements (Fig. 5A , bottom). This suggests that [18F]FLT-PET might provide a noninvasive way to predict early tumor response in patients treated with an agent like PD173074.
Enzyme Assay
In assays with the full-length FGFR-1 kinase, a total volume of 100 μL is used. It contains the following concentrations: 750 μg/mL of a random copolymer of glutamic acid and tyrosine (4:1), different concentrations of PD173074, 60 to 75 ng of enzyme, and 150 mM NaCl, 10 mM MnCl2, 0.2 mM sodium orthovanadate. [γ-32P]ATP (5 μM ATP containing 0.4 μCi of [γ-32P]ATP per incubation) is added to start the reaction, and samples are incubated for 10 minutes at 25°C. Thirty percent trichloroacetic acid is added to stop the reaction, and the material precipitates onto glass-fiber filter mats. The incorporation of [32P] into the glutamate tyrosine polymer substrate is measured by counting the radioactivity retained on the filters in a Wallac 1250 betaplate reader after the filters are cleaned three times with 15% trichloroacetic acid. The radioactivity that remains on the filters after samples without enzyme are incubated is known as nonspecific activity. Total activity (enzyme plus buffer) less nonspecific activity is the formula for calculating specific activity. An IC50 chart is used to calculate the concentration of PD173074 that inhibits FGFR-1 enzymatic activity by 50%.
Cell Assay
There has been prior description of an NIH 3T3 cell line that overexpresses VEGFR2 (Flk-1). Additionally, this cell line naturally expresses FGFR1. In 10 cm2 plates, 1×106 cells grown in DMEM enhanced with 10% calf serum are seeded and given 48 hours to grow. The cells are then put in starvation medium (DMEM with 0.1% calf serum) to become quiescent after the medium is removed. PD 173074 prepared in starvation medium is added to the cells at different concentrations and incubated for 5 minutes after 18 hours. Next, for five minutes at 37°C, the cells are stimulated with a growth factor [100 ng/mL of VEGF or 100 ng/mL of aFGF and 10 µg/mL of heparin]. Following an ice-cold PBS wash, the cells are lysed in 1 mL of lysis buffer that contains phosphatase inhibitor (0.2 mM Na3VO4) and contains 25 mM HEPES pH 7.5, 150 mM NaCl, 1% Triton X-100, 10% glycerol, 1 mM EGTA, 1.5 mM MgCl2, 1 mM PMSF, and 10 µg/mL aprotonin and 10 µg/mL leupeptin. Cell lysates are immunoprecipitated using FGFR1 antibodies for FGFR1 inhibition studies. Phosphotyrosine-specific antibodies are then used for SDS-PAGE and immunoblotting analysis. Cell lysates (20 µL) are subjected to direct SDS-PAGE analysis and immunoblotting using phosphotyrosine-specific antibodies in order to study the inhibition of VEGFR2.
Animal Protocol
Subcutaneous inoculation with 3×105 NIH 3T3 cells expressing Y373C FGFR3 and Ras V12 is performed on six-week-old athymic nude mice. The intraperitoneal injection of 0.05 mol/L lactic acid buffer or 20 mg/kg PD173074 is started on the day of the tumor injection and is administered for nine days. For every experiment, ten mice are used.
Xenografts and immunohistochemistry[5]
H510 (1:1 cell suspension; Matrigel) or H69 cells were implanted into the flank of nude mice. When tumors became measurable, 50 mg/kg PD173074/mice or equivalent volume of buffer alone were administered daily for 14 or 28 d. In addition, mice received or did not receive two doses of 5 mg/kg cisplatin. Tumor volume was monitored using a calliper. Animals were sacrificed when tumor burden reached 15 mm in any dimension and survival recorded as a Kaplan-Meier plot. Tissues were formalin fixed and paraffin embedded before staining as indicated in the figure legends. For the endomucin experiments, pictures were acquired using a ×10 objective and analyzed using ImageJ. For activated Caspase 3 and cytokeratin 18 scoring, the number of positive cells in five high-power field views/tumor (five tumors per condition) was determined and results represented as bar graphs (Fig. 5C , bottom). The total number of nuclei per field was determined by manual counting using event flagging in Metamorph. Nuclei partly outside the field of view were excluded.
[18F]FLT-PET imaging[5]
Animals with subcutaneous H-69 xenografts in the neck were used when the tumors reached ∼150 mm3. The tumor-bearing mice were given vehicle or PD173074 once daily by oral gavage and imaged with [18F]FLT-PET on days 0, 7, and 14 of treatment. Dynamic [18F]FLT-PET studies were carried out on a dedicated small animal PET scanner, quad-HIDAC (Oxford Positron Systems; ref. 15). Scanning was performed as previously described (16). [18F]FLT (80–100 μCi; 2.96–3.7 MBq) was injected into the tail veins of anesthetized mice positioned prone within the scanner. Dynamic scans were acquired in list-mode format over a 60-min period and sorted into 0.5-mm sinogram bins and 19 time frames (0.5 × 0.5 × 0.5 mm voxels; 4 × 15 s, 4 × 60 s, and 11 × 300 s) for image reconstruction. Cumulative images comprising of 30 to 60 min of the dynamic data were used for visualization of radiotracer uptake and to draw regions of interest. Regions of interest were defined on five tumor and five heart slices (each was 0.5 mm thick). Dynamic data from these slices were averaged for each tissue and at each of the 19 time points to obtain time versus radioactivity curves for these tissues. Tumor radioactivity was corrected for physical decay and normalized to that of heart to obtain a standardized uptake value. The fractional retention of tracer was calculated as the normalized uptake in tumors 60 min relative to that at 1.5 min
References

[1]. EMBO J . 1998 Oct 15;17(20):5896-904.

[2]. J Neurochem . 2000 Oct;75(4):1520-7.

[3]. J Neurosci Res . 2003 Nov 15;74(4):486-93.

[4]. Blood . 2004 May 1;103(9):3521-8.

[5]. Cancer Res . 2009 Nov 15;69(22):8645-51.

[6]. Int J Gynecol Cancer . 2012 Nov;22(9):1517-26.

Additional Infomation
PD173074 is a member of the class of ureas that is 1-tert-butylurea in which one of the hydrogens attached to N(3) is substituted by a pyrido[2,3-d]pyrimidin-7-yl group, which is itself substituted at positions 2 and 6 by a 4-(diethylamino)butyl]amino group and a 3,5-dimethoxyphenyl group, respectively. It is a FGF/VEGF receptor tyrosine kinase inhibitor. It has a role as a fibroblast growth factor receptor antagonist, an antineoplastic agent and an EC 2.7.10.1 (receptor protein-tyrosine kinase) inhibitor. It is a pyridopyrimidine, a member of ureas, a tertiary amino compound, a dimethoxybenzene, an aromatic amine and a biaryl. It is functionally related to a PD-166866.
Angiogenesis, the sprouting of new blood vessels from pre-existing ones, is an essential physiological process in development, yet also plays a major role in the progression of human diseases such as diabetic retinopathy, atherosclerosis and cancer. The effects of the most potent angiogenic factors, vascular endothelial growth factor (VEGF), angiopoietin and fibroblast growth factor (FGF) are mediated through cell surface receptors that possess intrinsic protein tyrosine kinase activity. In this report, we describe a synthetic compound of the pyrido[2,3-d]pyrimidine class, designated PD 173074, that selectively inhibits the tyrosine kinase activities of the FGF and VEGF receptors. We show that systemic administration of PD 173074 in mice can effectively block angiogenesis induced by either FGF or VEGF with no apparent toxicity. To elucidate the determinants of selectivity, we have determined the crystal structure of PD 173074 in complex with the tyrosine kinase domain of FGF receptor 1 at 2.5 A resolution. A high degree of surface complementarity between PD 173074 and the hydrophobic, ATP-binding pocket of FGF receptor 1 underlies the potency and selectivity of this inhibitor. PD 173074 is thus a promising candidate for a therapeutic angiogenesis inhibitor to be used in the treatment of cancer and other diseases whose progression is dependent upon new blood vessel formation. [1]
Basic fibroblast growth factor (FGF-2) promotes survival and/or neurite outgrowth from a variety of neurons in cell culture and regenerative processes in vivo. FGFs exert their effects by activating cell surface receptor tyrosine kinases. FGF receptor (FGFR) inhibitors have not been characterized on neuronal cell behaviors to date. In the present study, we show that the FGFR1 inhibitor PD 173074 potently and selectively antagonized the neurotrophic and neurotropic actions of FGF-2. Nanomolar concentrations of PD 173074 prevented FGF-2, but not insulin-like growth factor-1, support of cerebellar granule neuron survival under conditions of serum/K(+) deprivation; another FGF-2 inhibitor, SU 5402, was effective only at a 1,000-fold greater concentration. Neither PD 173074 nor SU 5402, at 100 times their IC(50) values, interfered with the survival of dorsal root ganglion neurons promoted by nerve growth factor, ciliary neurotrophic factor, or glial cell line-derived neurotrophic factor. PD 173074 and SU 5402 displayed 1,000-fold differential IC(50) values for inhibition of FGF-2-stimulated neurite outgrowth in PC12 cells and in granule neurons, and FGF-2-induced mitogen-activated protein kinase (p44/42) phosphorylation. The two inhibitors failed to disturb downstream signalling stimuli of FGF-2. PD 173074 represents a valuable tool for dissecting the role of FGF-2 in normal and pathological nervous system function without compromising the actions of other neurotrophic factors. [2]
Multiple studies have shown that migration, proliferation, and differentiation of oligodendrocyte (OL) lineage cells are influenced by fibroblast growth factor-2 (FGF-2) signaling through its receptors (FGFR) FGFR-1, FGFR-2, and FGFR-3. We report the effectiveness and specificity of a unique inhibitor, PD173074, for inhibiting FGF receptor signaling in OL-lineage cells. Three FGF-mediated responses of OL progenitors and two of differentiated OLs were examined by immunofluorescence microscopy and immunoblotting. PD173074 effectively antagonized the effect of FGF-2 on proliferation and differentiation of OL progenitors in culture. One dose of PD173074 at nanomolar concentrations was sufficient to inhibit ongoing FGF-2 mediated proliferation for prolonged periods, in a non-toxic, dose-dependent manner. In contrast, platelet-derived growth factor (PDGF)-induced proliferation was unaffected by PD173074. Similarly, mitogen-activated protein kinase (MAPK) activation, a downstream event after activation of either FGFR or PDGFR, was also blocked by PD173074 in OL progenitors stimulated with FGF-2 but not PDGF. A general tyrosine kinase inhibitor (PD166285), however, antagonized both FGF-2- and PDGF-mediated responses. PD173074 also completely antagonized two phenotypic alterations of differentiated OLs, specifically downregulation of myelin proteins, and their re-entry into the cell cycle. We conclude that PD173704 is an effective and specific inhibitor for multiple FGF-2-mediated responses of both OL progenitors and differentiated OLs. This inhibitor provides a direct approach for identifying the importance of FGF signaling, comparable in effect to a knockout of all FGF receptors and all FGF ligands, while leaving other pathways unaffected. Thus, PD173704 is an excellent tool for investigating the role of FGF signaling in vivo in the context of combinatorial interactions of other signals. [3]
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C28H41N7O3
Molecular Weight
523.67
Exact Mass
523.327
Elemental Analysis
C, 64.22; H, 7.89; N, 18.72; O, 9.17
CAS #
219580-11-7
Related CAS #
219580-11-7
PubChem CID
1401
Appearance
Off-white to yellow solid powder
Density
1.2±0.1 g/cm3
Melting Point
82-85°C
Index of Refraction
1.599
LogP
3.33
Hydrogen Bond Donor Count
3
Hydrogen Bond Acceptor Count
8
Rotatable Bond Count
13
Heavy Atom Count
38
Complexity
690
Defined Atom Stereocenter Count
0
SMILES
O=C(NC1=NC2=NC(NCCCCN(CC)CC)=NC=C2C=C1C3=CC(OC)=CC(OC)=C3)NC(C)(C)C
InChi Key
DXCUKNQANPLTEJ-UHFFFAOYSA-N
InChi Code
InChI=1S/C28H41N7O3/c1-8-35(9-2)13-11-10-12-29-26-30-18-20-16-23(19-14-21(37-6)17-22(15-19)38-7)25(31-24(20)32-26)33-27(36)34-28(3,4)5/h14-18H,8-13H2,1-7H3,(H3,29,30,31,32,33,34,36)
Chemical Name
1-tert-butyl-3-[2-[4-(diethylamino)butylamino]-6-(3,5-dimethoxyphenyl)pyrido[2,3-d]pyrimidin-7-yl]urea
Synonyms
PD 173074; PD-173074; 219580-11-7; 1-(tert-Butyl)-3-(2-((4-(diethylamino)butyl)amino)-6-(3,5-dimethoxyphenyl)pyrido[2,3-d]pyrimidin-7-yl)urea; 1-tert-butyl-3-[2-[4-(diethylamino)butylamino]-6-(3,5-dimethoxyphenyl)pyrido[2,3-d]pyrimidin-7-yl]urea; MFCD08705327; 1-tert-butyl-3-[2-{[4-(diethylamino)butyl]amino}-6-(3,5-dimethoxyphenyl)pyrido[2,3-d]pyrimidin-7-yl]urea; PD173074
HS Tariff Code
2934.99.9001
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)
Solubility Data
Solubility (In Vitro)
DMSO: ~100 mg/mL (~191.0 mM)
Water:<1 mg/mL
Ethanol: ~100 mg/mL (~191.0 mM)
Solubility (In Vivo)
Solubility in Formulation 1: ≥ 2.5 mg/mL (4.77 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution.

Solubility in Formulation 2: ≥ 2.5 mg/mL (4.77 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.

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Solubility in Formulation 3: ≥ 2.08 mg/mL (3.97 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.8 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.


Solubility in Formulation 4: 5% DMSO+corn oil: 15mg/mL

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 1.9096 mL 9.5480 mL 19.0960 mL
5 mM 0.3819 mL 1.9096 mL 3.8192 mL
10 mM 0.1910 mL 0.9548 mL 1.9096 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.

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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.

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Biological Data
  • PD173074

    The expression of MYC and FGFR3 was analyzed by Western blotting in lysates from MGH‐U3 and RT112 cells transfected for 72h withMYCsiRNAs.


    PD173074

    TheMYCaccumulation induced by activatedFGFR3 confers sensitivity toBETbromodomain inhibitors inFGFR3‐dependent bladder cancer cellsinvitroandinvivo.2018 Apr;10(4). pii: e8163.

  • PD173074

    MGH‐U3 and RT112 cells were treated with control DMSO, PD [PD173074 (FGFR inhibitor)], SB [SB203580 (p38 inhibitor)] or LY [LY294002 (PI3 kinase inhibitor)] for 72h and cell viability was then assessed by measuring MTT incorporation.


    PD173074

    Venn diagram showing the number of upstream regulators (transcription factors) significantly predicted by Ingenuity Pathway Analysis to be involved in the regulation of gene expression observed afterFGFR3knockdown in RT112 and MGH‐U3 cells (left panel).2018 Apr;10(4). pii: e8163.

    PD173074

  • PD173074

    PD173074

    TheMYCaccumulation induced by activatedFGFR3 is dependent on the activation of p38 andAKT.

    PD173074

    MYCandFGFR3 are involved in a positive feedback loop in bladder cancer cell lines expressing an activated form ofFGFR3.2018 Apr;10(4). pii: e8163.

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