Catalog No.S3042

Purmorphamine, which directly binds and activates Smoothened, blocks BODIPY-cyclopamine binding to Smo with IC50 of ~ 1.5 μM in HEK293T cell and also is an inducer of osteoblast differentiation with EC50 of 1 μM.

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Purmorphamine Chemical Structure

Purmorphamine Chemical Structure
Molecular Weight: 520.62

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Quality Control & MSDS

Product Information

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Product Description

Biological Activity

Description Purmorphamine, which directly binds and activates Smoothened, blocks BODIPY-cyclopamine binding to Smo with IC50 of ~ 1.5 μM in HEK293T cell and also is an inducer of osteoblast differentiation with EC50 of 1 μM.
Targets Smoothened [1]
(HEK293T cells)
IC50 ~1.5 μM
In vitro Purmorphamine activates the Hedgehog pathway by directly binds and activates Smoothened with IC50 of ~ 1.5 μM in compete with cyclopamine, a Smo antagonist. [1] Purmorphamine is a potent inducer of osteogenesis in multipotent C3H10T1/2 cells. The EC50 (based on ALP expression) for Purmorphamine is 1 μM in C3H10T1/2 cells. Purmorphamine (1 μM) and BMP-4 (100 ng/mL) together increase ALP activity more than 90-fold in 3T3-L1 cells. [2] In contrast to BMP-4, Purmorphamine induces osteogenesis by activating Hedgehog signaling in multipotent mesenchymal progenitor cells. [3]
In vivo Purmorphamine up-regulates ALP expression in human mesenchymal stem cell-based constructs on rats. [4]

Protocol(Only for Reference)

Kinase Assay: [1]

Binding assay Smo binding assays are conducted with BODIPY-cyclopamine and Smo-overexpressing cells as previously described4,5, using CMV promoter-based, SV40 origin-containing expression constructs for Smo-Myc3, the deletion mutant SmoCRD (deletion of amino acids 68 to 182), and SmoCT (deletion of amino acids 556 to 793). HEK 293T cells are grown on poly-D-lysine-treated glass coverslips in 12-well plates until 70% confluency and then transfected with the appropriate expression construct (0.5 g/well) using FuGene 6 according the manufacturer's protocols. Two days after transfection, the HEK 293T cells are incubated with DMEM containing 0.5% bovine calf serum, 5 nM BODIPY-cyclopamine, and varying concentrations of Purmorphamine (0, 1.5, or 5 M) (1 mL/well) for 1 h at 37 ℃. The Smo-overexpressing cells are then washed with 1 × PBS buffer (1 mL/well), mounted with DAPI-containing medium, and visualized using a Leica DM4500B fluorescence microscope. For binding assays using fixed cells, the Smo-overexpressing HEK 293T cells are fixed with 3% paraformaldehyde in 1 × PBS buffer for 10 min at room temperature (1 mL/well), treated with 1 × PBS containing 10 mM glycine and 0.2% sodium azide for 5 min (1 mL/well), washed with 1 × PBS buffer (1 mL/well), and treated with the Purmorphamine-containing media described above for 4 h at room temperature.

Cell Assay: [2]

Cell lines C3H10T1/2 cell
Concentrations 0.5-10 μM
Incubation Time 4 days
Method C3H10T1/2 cells are expanded in T175 flasks; cells at 13th passage are detached by trypsin/EDTA and diluted in the growth media. The resulting cell suspension is then plated into black clear bottom 384-well plates with 2500 cells/well in 100 µL growth medium using a Multi-dropTM liquid delivery system. After overnight incubation, cells attached to the bottom of the wells. A stock solution of each Purmorphamine in DMSO (500 nL) is delivered into corresponding well using a Mini TrakTM multiposition dispenser system to make a final concentration of 5μM of Purmorphamine. Cells are then incubated at 37 ℃ with 5% CO2 in air atmosphere. After 4 days, the medium is removed and 10 μL of passive lysis buffer is added into each well. After 5 min, 10 μL of alkaline phosphatase substrate solution is added to each well. After incubating 15 min at room temperature, the plates are read on an Acquest high-throughput plate reader following the manufacturer's protocol.

Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)

SpeciesMouseRatRabbitGuinea pigHamsterDog
Weight (kg)
Body Surface Area (m2)0.0070.0250.
Km factor36128520
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.

Rat dose (mg/kg) = mouse dose (22.4 mg/kg) ×  mouse Km(3)  = 11.2 mg/kg
rat Km(6)


[1] Sinha S, et al. Nat Chem Biol, 2006, 2(1), 29-30.

[2] Wu X, et al. J Am Chem Soc, 2002, 124(49), 14520-14521.

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Chemical Information

Download Purmorphamine SDF Download Purmorphamine SDF
Molecular Weight (MW) 520.62


CAS No. 483367-10-8
Storage 3 years -20℃powder
2 years -80℃in solvent
Synonyms N/A
Solubility (25°C) * In vitro DMSO 4 mg/mL warming (7.68 mM)
Water <1 mg/mL
Ethanol <1 mg/mL
In vivo 2% DMSO+30% PEG 300+5% Tween 80+ddH2O 1mg/mL
* <1 mg/ml means slightly soluble or insoluble.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
Chemical Name 9H-Purin-6-amine, 9-cyclohexyl-N-[4-(4-morpholinyl)phenyl]-2-(1-naphthalenyloxy)-

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
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