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ISO Certified Reference Material Purity Degree 99% 1- (3-chloropropanoyl) -1, 2, 3, 4-Tetrahydroquinoline CAS No. 91494-44-9, Find Details and Price about Sericin CAS No. 91494-44-9 from ISO Certified Reference Material Purity Degree 99% 1- (3-chloropropanoyl) -1, 2, 3, 4-Tetrahydroquinoline CAS No. 91494-44-9 - Hangzhou Dingyan Chem Co., Ltd.