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吡氟氯禾灵 标准品
Un-derivatized Carbonyl Compounds Solutions Kit - 8315
杆菌肽
4,4'-Difluorodiphenylmethane
HINOKIFLAVONE(RG) 标准品
39452, 4H-Cyclopenta[def]phenanthren-4-o ne (purity) 标准品
盐酸强力霉素(脱氧土霉素盐酸盐,盐酸多西环素)
CNET 13 aldehydes mix solution, 10μg/ml (as formaldehyde, acetone, acetoaldehyde, acrolein, methacro
MOPSO Free Acid
丙酮中对硫磷溶液标准物质