64-67-5
硫酸二乙酯
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2973-80-0
2-溴-5-羟基苯甲醛
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120890-75-7
2-Bromo-5-ethoxybenzoic acid
765944-34-1
methyl 2-bromo-5-ethoxybenzoate
857285-21-3
2-bromo-5-ethoxybenzoyl chloride