Qingdao Sigma Chemical Co., Ltd.
Country: China (Mainland)
Business Type: Trading Company
High Quality 3-Butenoic acid,2-amino-4-(2-aminoethoxy)-, hydrochloride (1:1), (2S,3E)CAS NO.: 55720-26-8
High Quality 2H-1-Benzopyran-7-ol,3,4-dihydro-3-(4-hydroxyphenyl)CAS NO.: 94105-90-5