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m-Nitrophenylacetic acid (无证书)
甲基咪草酯溶液,100ppm
丙酮中恶虫威溶液标准物质
敌百虫(三氯松)
Niobium Powder (Nb) 99.9%
First Standard® 丙酮中二甲戊灵溶液,1000ug/ml
Irinotecan Related Compound E 标准品
First Standard® 甲醇中甲氧苄氨嘧啶溶液,100μg/mL
1,12-Dimethylbenzo[c]phenanthrene 标准品
TRYPTOPHAN, DL-(P) 标准品