(+)-Blebbistatin

(+)-Blebbistatin is the inactive enantiomer of (-)-blebbistatin (Cay-13013), which is a selective inhibitor of non-muscle myosin II ATPases. Prolonged exposure to blue light (450-490 nm) results in degradation of blebbistatin to an inactive product via cytotoxic intermediates, which may be problematic for its use in fluorescent live cell imaging applications. (R)-nitro-Blebbistatin (Cay-9001935) is a more stable form of (+)-blebbistatin. The addition of a nitro group stabilizes the molecule to circumvent its degradation by prolonged blue light exposure. (R)-nitro-Blebbistatin has the same stereochemistry as the inactive (+)-blebbistatin enantiomer.Formal Name: 1,2,3,3a-tetrahydro-3aR-hydroxy-6-methyl-1-phenyl-4H-pyrrolo[2,3-b]quinolin-4-one. CAS Number: 1177356-70-5. Synonyms: (R)-Blebbistatin. Molecular Formula: C18H16N2O2. Formula Weight: 292.3. Purity: >98%. Formulation: (Request formulation change), A crystalline solid. Solubility: DMF: 20 mg/ml, DMF:PBS (pH 7.2) (1:1): 0.5 mg/ml, DMSO: 12.5 mg/ml. lambdamax: 236, 270, 298, 418 nm. SMILES: Cc1ccc2N=C3N(CC[C@@]3(O)C(=O)c2c1)c1ccccc1. InChi Code: InChI=1S/C18H16N2O2/c1-12-7-8-15-14(11-12)16(21)18(22)9-10-20(17(18)19-15)13-5-3-2-4-6-13/h2-8,11,22H,9-10H2,1H3/t18-/m0/s1. InChi Key: LZAXPYOBKSJSEX-SFHVURJKSA-N.