174078-66-1
3,4-dihydro-6-methoxy-2,5,7,8-tetramethyl-2H-1-benzopyran-2-carboxylic acid methyl ester
→
~99%
106461-96-5
6-甲氧基-2,5,7,8-四甲基色满-2-羧酸
56305-04-5
6-HYDROXY-2,5,7,8-TETRAMETHYLCHROMAN-2-CARBOXYLIC ACID
+
77-78-1
硫酸二甲酯