S-Phenylsulfonylcysteine

S-Nitrosylation reactions regulate protein function and mediate nitrosative stress. S-Phenylsulfonylcysteine is a reagent for blocking thiol (-SH) groups on proteins and peptides at room temperature. This is the first step of the thiosulfonate switch technique, in which thiosulfonates are fluorescently tagged with a probe bearing a reactive thiol, such as rhodamine-SH.Formal Name: S-(phenylsulfonyl)-L-cysteine. CAS Number: 97512-83-9. Synonyms: SPSC. Molecular Formula: C9H11NO4S2. Formula Weight: 261.3. Purity: >98%. Formulation: (Request formulation change), A crystalline solid. Solubility: DMF: 0.1 mg/ml, DMSO: 0.5 mg/ml, PBS (pH 7.2): 0.5 mg/ml. lambdamax: 221, 261 nm. SMILES: O=S(C1=CC=CC=C1)(SC[C@H](N)C(O)=O)=O. InChi Code: InChI=1S/C9H11NO4S2/c10-8(9(11)12)6-15-16(13,14)7-4-2-1-3-5-7/h1-5,8H,6,10H2,(H,11,12)/t8-/m0/s1. InChi Key: YKYWKTOUPAICGF-QMMMGPOBSA-N.