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2-Mercapto propionic acid - also is an organic- chemical compound , the synthesis of herbicides is needed and also in depilatory creams is used. The ammonium salt of thiolactic ammonium thiolactate
M 1639 (OTTO) 2-Mercaptopropionic acid, 95% Cas 79-42-5 - used as a depilatory and in hair waving preparations.