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Levonorgestrel
Catalog No: Product Name: Levonorgestrel
CAS No:797-63-7||Chemical Formula:C21H28O2||13-Ethyl-17-hydroxy-18,19-dinor-17α-pregn-4-en-20-yn-3-one
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PI & PI BIOTECH INC.
Phone: 86-20-81716320， Mobile Phone：18371201331 Fax: 020-81716319 E-mail:
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