p-Nitrophenyl beta-D-Galactopyranoside

p-Nitrophenyl beta-D-galactopyranoside is a chromogenic substrate for beta-D-galactosidase. Upon enzymatic cleavage by beta-D-galactosidase, p-nitrophenol is released, which can be quantified by colorimetric detection at 420 nm as a measure of beta-D-galactosidase activity. p-Nitrophenyl beta-D-galactopyranoside has been used to determine the substrate specificity of T. maritima MSB8 beta-galactosidase.Formal Name: 4-nitrophenyl beta-D-galactopyranoside. CAS Number: 3150-24-1. Synonyms: p-Nitrophenyl beta-D-galactoside, pNPGal, NSC 89287, PNPG. Molecular Formula: C12H15NO8. Formula Weight: 301.3. Purity: >98%. Formulation: (Request formulation change), A solid. Solubility: DMF: 11 mg/ml, DMSO: 10 mg/ml, Ethanol: Slightly soluble, PBS (pH 7.2): 0.09 mg/ml. lambdamax: 220, 303 nm. SMILES: O[C@H]([C@H]([C@H]([C@H](O1)CO)O)O)[C@@H]1OC2=CC=C(C=C2)[N+]([O-])=O. InChi Code: InChI=1S/C12H15NO8/c14-5-8-9(15)10(16)11(17)12(21-8)20-7-3-1-6(2-4-7)13(18)19/h1-4,8-12,14-17H,5H2/t8-,9+,10+,11-,12-/m1/s1. InChi Key: IFBHRQDFSNCLOZ-YBXAARCKSA-N.