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Dalian Richon Chem, based in China, is a pharmaceutical company.
One of their notable product 3?,5-Dihydroxy-15?,16?-methylene-pregn-6-ene-17-one with CAS Number 82543-15-5.
and End Use API Drospirenone
18
Hangzhou Deli Chemical, based in China, is a pharmaceutical company.
One of their notable product 3 beta,5 beta-Dihydroxy-15 beta,16 beta-methylene-5 beta-androst-6-en-17-one with CAS Number 82543-15-5.
and End Use API Drospirenone
17
Zhejiang Xianju Pharmaceutical Co. Ltd, based in China, is a pharmaceutical company that stands out with its certifications from FDA and EDQM.
One of their notable product 3ß,5ß-dihydroxy-15ß,16ß-methylene-androst-6-en-17-one with CAS Number 82543-15-5.
and End Use API Drospirenone