3-Chloro-2-hydroxypropylmercapturic acid 97729-49-2 Chpma cpd L-Cysteine, N-acetyl-S-(3-chloro-2-hydroxypropyl)- N-Acetyl-S-(3-chloro-2-hydroxypropyl)-L-cysteine N-Acetyl-S-(3-chloro-2-hydroxypropyl)cysteine