28361-96-8 3-((2-Chloroethyl)thio)alanine 98069-36-4 ALANINE, 3-((2-CHLOROETHYL)THIO)- BRN 2433353 CCRIS 1745 S-(2-Chloroethyl)-L-cysteine S-(2-Chloroethyl)-cysteine S-(2-Chloroethyl)cysteine