1,2-Benzenediol, 4-(4-(4-hydroxy-3-methoxyphenyl)-2,3-dimethylbutyl)- 3'-O-Methyl-NDGA 3'-O-Methyl-nordihydroguaiaretic acid 54473-24-4 Hemi-ndga Heminordihydroguaiaretic acid Mal.4 Malachi 4 5-6