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四霉素 Bepure-25862
First Standard® 头孢噻呋
Volatile Organics High Concentration Mixture #6 (repkg) 2000ug/ml in Methanol
2-Methylheptadecane
(进口药品通关单)青霉素G钾盐 标准品
METHYLCATECHOL, 3-(RG) 标准品
L-脯氨酸 标准品
氧乐果溶液, 1000ppm
Lithium aluminum tri-tert-butoxy hydride
磺乐灵溶液,100ppm