申请人:L'Oreal
公开号:US04125601A1
公开(公告)日:1978-11-14
Chemical compounds of the formula: ##STR1## in which R.sub.1 and R.sub.2 can be identical or different and represent hydrogen or alkyl having from 1 to 4 carbon atoms. The compounds are used in hair dyeing, and a process for their preparation is disclosed.
化学式为 ##STR1## 的化合物,其中R.sub.1和R.sub.2可以相同也可以不同,代表氢或含有1至4个碳原子的烷基。这些化合物用于染发,并公开了一种制备它们的方法。