.beta.,.gamma.-Dimethyl-.alpha.,.delta.-bis(3,4-dihydroxyphenyl)butane 1,2-Benzenediol, 4,4'-(2,3-dimethyl-1,4-butanediyl)bis- 4,4'-(2,3-Dimethyl-1,4-butanediyl)bis(pyrocatechol) 4,4'-(2,3-Dimethyltetramethylene)dipyrocatechol 500-38-9 Butane, 1,4-bis(3,4-dihydroxyphenyl)-2,3-dimethyl- Dihydronorguaiaretic acid Dinorguaiaretic acid, dihydro- NDGA NSC4291 Nordihydroguaiaretic acid Nordihydroguairaretic acid Norguaiaretic acid, dihydro- PYROCATECHOL, 4,4'- (2,3-DIEMTHYLTETRAMETHYLENE) DI- Pyrocatechol, 4,4'-(2,3-dimethyltetramethylene)di- WLN: QR BQ D1Y1&Y1&1R CQ DQ