sichuan tongsheng is the most strongest manufacturer and exporter of amino acids and their derivatives in china, we guarantee high quality, competive price and reliable service.
we fully compliance with iso9001:2008, production and quality management following gmp standards, production plant constructed in accordance with gmp standards. quality control conforms to the standards of pharmaceutical-food cp grade and japan ajinomoto aji, american usp and reagent grade br.
we have kosher and hala certificate.
product name:l-cysteine
cas no.:52-90-4
molecular weight:121.15800
molecular formula:c3h7no2s
einecs:200-158-2