4-[(4-Methylphenyl)amino]-4-oxobut-2-enoic acid4-[(4-Methylphenyl)amino]-4-oxobut-2-enoic acidY32222 · CAS 24870-11-997%¥1290.00 / 1g 起选规格
2-Bromo-2,4-Dihydroxyacetophenone促销2-Bromo-2,4-DihydroxyacetophenoneY32237 · CAS 2491-39-6≥97%¥234.00 / 250mg 起选规格