(R*,S*)-4,4'-(2,3-Dimethylbutane-1,4-diyl)bispyrocatechol 1,2-Benzenediol, 4,4'-(2,3-dimethyl-1,4-butanediyl)bis-, (R*,S*)- 27686-84-6 334707-72-1 Actinex CHX 100 EINECS 248-606-6 Masoprocol Masoprocol [USAN:INN] Masoprocolum [INN-Latin] Nordihydroguaiaretic acid Nordihydroguaiaretic acid (meso-form) meso-4,4'-(2,3-Dimethyltetramethylene)dipyrocatechol meso-NDGA