和甲基麦冬黄烷酮B 1. Objective To determine the contents of methylophiopogonanone A (MOA) and methylophiopogonanone B (MOB) in Radix Ophiopogonis and its extracts. 目的测定麦冬药材及其提取物中甲基麦冬黄烷酮A(MOA)和甲基麦冬黄烷酮B(MOB)的量,为麦冬药材及其提取物的质量控制提供科学依据。