pentamethyl violet

例句：

1. 1.This compound has been used in dyes and pigments for many years.
   这种化合物已经被用于染料和颜料中多年。
2. 2.The color of the pentamethyl violet is a deep purple.
   五甲基紫的颜色是一种深紫色。
3. 3. The pentamethyl violet was discovered by accident during a chemical synthesis experiment.
   五甲基紫是在一次化学合成实验中偶然发现的。