Qingdao Sigma Chemical Co., Ltd.
Country: China (Mainland)
Business Type: Trading Company
High Quality 7-Methoxy-1-naphthylacetonitrileCAS NO.: 138113-08-3
High Quality 2-Nitro-N-hydroxyethyl anilineCAS NO.: 4926-55-0
High Quality Methyl (2R,3S)-3-(tert-butoxycarbonylamino)-2-hydroxy-3-phenylpropionateCAS NO.: 124605-42-1