Tacrolimus - Impurity A

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Catalogue number:	PA 20 01540
Chemical name:	Ascomycin
CAS Number:	104987-12-4
Category:	pharmaceutical standards,intermediates,Fine Chemicals
Synonyms:	Tacrolimus Desmethylene Impurity; Changchuanmycin; Immunomycin; (1R,9S,12S,13R,14S,17R,18E,21S,23S,24R,25S,27R)-17-Ethyl-1,14-dihydroxy-12-[(1E)-1-[(1R,3R,4R)-4-hydroxy-3-methoxycyclohexyl]prop-1-en-2-yl]-23,25-dimethoxy-13,19,21,27-tetramethyl-11,28-dioxa-4-azatricyclo[22.3.1.04,9]octacos-18-ene-2,3,10,16-tetrone; (3S,4R,5S,8R,9E,12S,14S,15R,16S,18R,19R,26aS)-8-Ethyl-5,6,8,11,12,13,14,15,16,17,18,19,24,25,26,26a-hexadecahydro-5,19-dihydroxy-3-[(1E)-2-[(1R,3R,4R)-4-hydroxy-3-methoxycyclohexyl]-1-methylethenyl]-14,16-dimethoxy-4,10,12,18-tetramethyl-15,19-epoxy-3H-pyrido[2,1-c][1,4]oxaazacyclotricosine-1,7,20,21(4H,23H)-tetrone; Ascomycin (USP);
Molecular form:	C₄₃H₆₉NO₁₂
Appearance:	White Solid
Mol. Weight:	792.01
Storage:	2-8°C Refrigerator
Shipping Conditions:	Ambient
Applications:	NA