Sulforhodamine B (sodium salt) (technical grade)

Sulforhodamine B is an aminoxanthene dye. It binds basic amino acid residues under mild acidic conditions, which can be quantified by colorimetric detection at 510 nM, and is commonly used for cell density quantification in cytotoxicity screening.Formal Name: 3,6-bis(diethylamino)-9-(2,4-disulfophenyl)-xanthylium, inner salt, monosodium salt. CAS Number: 3520-42-1. Synonyms: Acid Red XB. Molecular Formula: C27H29N2O7S2 . Na. Formula Weight: 580.7. Purity: >75%. Formulation: (Request formulation change), A crystalline solid. Solubility: DMF: 10 mg/ml, DMSO: 10 mg/ml, Ethanol: 10 mg/ml, PBS (pH 7.2): 10 mg/ml. lambdamax: 553 nm. SMILES: CCN(CC)C1=CC2=[O+]C3=C(C=CC(N(CC)CC)=C3)C(C4=C(S([O-])(=O)=O)C=C(S([O-])(=O)=O)C=C4)=C2C=C1.[Na+]. InChi Code: InChI=1S/C27H30N2O7S2.Na/c1-5-28(6-2)18-9-12-21-24(15-18)36-25-16-19(29(7-3)8-4)10-13-22(25)27(21)23-14-11-20(37(30,31)32)17-26(23)38(33,34)35,/h9-17H,5-8H2,1-4H3,(H-,30,31,32,33,34,35),/q,+1/p-1. InChi Key: SXQCTESRRZBPHJ-UHFFFAOYSA-M.