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N-(5-Aminopentyl)-1-naphthalenesulfonamide Hydrochloride
Semi-Volatile by Capillary Column GC/MS Mix 1 标准品
甲嘧磺隆
2-Ethyl-5-methyl- and 2-ethyl-6-methylpyrazine, Isomer mixture
Diethanolamine lauryl sulfate (无证书)
Undecanoic-d21 Acid 标准品
First Standard® 丙酮中杀螟硫磷溶液,100μg/mL
4-(4-氯-2-甲基苯氧基)丁酸/二钾四氯丁酸(标准品)[94-81-5]
Low Density Polyethylene Resin
苯并(a)芘,100mg 标准品