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Alkyldimethyl-3.4-dichloro-benzyl ammonium chloride (无证书)
Phenyl propionate (无证书)
STD.PROPIONIC ACID, BUTYRIC ACID, ACETIC ACID IN WATER, 100ML, 1 EACH 标准品
b-Naphthoflavone (无证书)
马来酸氯苯那敏
β-Methylamino-L-alanine-13C,15N2 Dihydrochloride
ααα (20S,24RS)-24-Ethylcholestane
4-氯-2-甲基-苯酚 标准品
甲基五氯苯基硫醚
南方小麦粉 特制二等 标准样品