Also Called: nordihydroguaiaretic acid;nordihydroguariaretic acid;NORDIHYDROGUAIARETIC ACID--PROHIBITED WITH EXCEPTIONS;1,4-bis(3,4-dihydroxyphenyl)-2,3-dimethylbutane;4,4'-(2,3-Dimethyltetramethylene)dipyrocatechol;1,2-Benzenediol, 4,4'-(2,3-dimethyl-1,4-butanediyl)bis-;1,4-BIS-(3,4-DIHYDROXYPHENYL)-2,3-DIMETHYL-BUTAN;Pyrocatechol, 4,4'-(2,3-dimethyltetramethylene)di-;4,4'-(2,3-四亚甲基)二邻苯二酚