CAS:902837-39-2 4-氨基-5-碘-3-溴吡啶 Thermo Fisher 原Acros Organics、Alfa Aesar阿法埃莎、Maybridge、Fisher Chemical
CAS:902837-55-2 (6-氯吡啶-3-基)(氧基)乙酸乙酯 Thermo Fisher 原Acros Organics、Alfa Aesar阿法埃莎、Maybridge、Fisher Chemical
CAS:902837-54-1 5-碘-2-异丙氧基吡啶 Thermo Fisher 原Acros Organics、Alfa Aesar阿法埃莎、Maybridge、Fisher Chemical
Ethyl 2-chloro-5-pyridylglyoxylate / Ethyl 2-chloro-5-pyridylglyoxylate 902837-55-2
6-Bromo-2-chloro-1,8-naphthyridine, 96% / 6-Bromo-2-chloro-1,8-naphthyridine, 96% 902837-40-5
水中镉、铬、铜、镍、铅、锌成分分析标准物质 / 水中镉、铬、铜、镍、铅、锌成分分析标准物质 As 10ng/g,Pb 50ng/g,Cu 50ng/g,Cr 30ng/g,Zn 90ng/g,Ni 60ng/g.基体: 0.5mol/L HNO3,K+2.2mg/L,Na+23mg/L,Ca2+39mg/L,Mg2+11mg/L
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