S 1367a (OTTO) L-Serine methyl ester hydrochloride, 99% Cas 5680-80-8 - used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff fields. S 1367a (OTTO) L-Serine methyl ester hydrochloride, 99% Cas 5680-80-8 - used as a raw material in peptide synthesis.