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L-Alanine Benzyl Ester Hydrochloride
PUNYW27718281 Promestriene Impurity 2
Stainless Steel Cr 17-Ni 11-Nb 0.6 (AISI 348)
N-(2-Hydroxyethyl)-N-methylperfluorooctanesulfonamide
依诺沙星溶液, 100ppm
Methyl-a-chloroacrylate (无证书)
First Standard® 乙腈中苯锈啶溶液,100μg/mL
丙酮中伏杀磷溶液标准样品
乙硫磷甲醇溶液标准物质
PFBOA glyoxalaldoxime (syn/anti), 100μg/ml in n-hexane