***ermectinB1***M005-O-Demethyl***ermectinA1a(>80%)and5-O-demethyl-25-de(1-methylpropyl)-25-(1-methylethyl)***ermectinA1a(<20%)71751-41-2***ermectinB1a***MB1A5-O-Demethyl***ermectinA1a(>95%)***ermectinB1aDihydroAnalog***M3022,23-Dihydro***ermectinB1a70288-86-7***ermectinB1b***MB1B5-O-demethyl-25-de(1-methylpropyl)-25-(1-methylethyl)***ermectinA1a(>95%)快速供应标准品公司名称：深圳精标科技有限公司网站：http://cu-)