Everolimus EP Impurity B

Chemical Name: (2S)-1-[[(2R,3R,6S)-2-hydroxy-6-[(2S,3E,5E,7E,9S,11R,13R,14R,15E,17R,19E,21R)-14-hydroxy-22-[(1S,3R,4R)-4-(2-hydroxyethoxy)-3-methoxycyclohexyl]-2,13-dimethoxy-3,9,11,15,17,21-hexamethyl-12,18-dioxodocosa-3,5,7,15,19-pentaen-1-yl]-3-methyloxan-2-yl](oxo)acetyl]piperidine-2-carboxylic acid (as per EP)

Synonym: Everolimus 19-Ene Open-Ring Impurity ; seco Everolimus ; (19E/Z)-seco-[4-O-(2-Hydroxyethyl)] Rapamycin