A 4-(Nitrooxy)butyl (5Z)-7-((1R,2R,3R,5S)-3,5-dihydroxy-2-((3R)-3-hydroxy-5-phenylpentyl)cyclopentyl)hept-5-enoate written confirmation (4-(Nitrooxy)butyl (5Z)-7-((1R,2R,3R,5S)-3,5-dihydroxy-2-((3R)-3-hydroxy-5-phenylpentyl)cyclopentyl)hept-5-enoate WC) is an official document issued by a regulatory agency to a 4-(Nitrooxy)butyl (5Z)-7-((1R,2R,3R,5S)-3,5-dihydroxy-2-((3R)-3-hydroxy-5-phenylpentyl)cyclopentyl)hept-5-enoate manufacturer, verifying that the manufacturing facility of a 4-(Nitrooxy)butyl (5Z)-7-((1R,2R,3R,5S)-3,5-dihydroxy-2-((3R)-3-hydroxy-5-phenylpentyl)cyclopentyl)hept-5-enoate active pharmaceutical ingredient (API) adheres to the Good Manufacturing Practices (GMP) regulations of the importing country. When exporting 4-(Nitrooxy)butyl (5Z)-7-((1R,2R,3R,5S)-3,5-dihydroxy-2-((3R)-3-hydroxy-5-phenylpentyl)cyclopentyl)hept-5-enoate APIs or 4-(Nitrooxy)butyl (5Z)-7-((1R,2R,3R,5S)-3,5-dihydroxy-2-((3R)-3-hydroxy-5-phenylpentyl)cyclopentyl)hept-5-enoate finished pharmaceutical products to another nation, regulatory agencies frequently require a 4-(Nitrooxy)butyl (5Z)-7-((1R,2R,3R,5S)-3,5-dihydroxy-2-((3R)-3-hydroxy-5-phenylpentyl)cyclopentyl)hept-5-enoate WC (written confirmation) as part of the regulatory process.
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