Qingdao Sigma Chemical Co., Ltd.
Country: China (Mainland)
Business Type: Trading Company
High quality 2H-1-Benzopyran-3,5,7-triol,2-(3,4-dihydroxyphenyl)-3,4-dihydro-, (2R,3S)CAS NO.: 154-23-4
High quality Benzenesulfonamide,4-amino-N-(4,6-dimethyl-2-pyrimidinyl)CAS NO.: 57-68-1