短语词组短语Pyrocatechol Violet sodium salt 儿茶酚紫钠盐pyrocatechol violet pv 邻苯二酚紫de sulfonated pyrocatechol violet 去磺化邻苯二酚紫Pyrocatechol violet -PV 邻苯二酚紫de -sulfonated pyrocatechol violet 去磺化邻苯二酚紫 返回 pyrocatechol violet