6,6',7,7'-Tetrahydroxy-4,4,4',4'-tetramethyl-2,2'-spirobichroman ≥98%
T161691-250MG / 250MG
CAS:32737-35-2
6,6',7,7'-Tetrahydroxy-4,4,4',4'-tetramethyl-2,2'-spirobichroman ≥98%
T161691-5G / 5G
CAS:32737-35-2