2,5-二羟基苯甲酸,2,5-Dihydroxybenzoic acid [2,5-DHBA, DHB];matrix substance for MALDI-MS, >99.0% (HPLC)
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琥珀酰-β-环糊精,Succinyl-β-cyclodextrin [succ-β-CD;succinyl-β-CD];powder -
大豆蛋白胨, 酶消化物 来源于酪蛋白,N-Z-Amine® B;Peptone from casein -
33种周期表ICP混标1,Periodic table mix 1 for ICP;TraceCERT®, 33 elements, 10 mg/L in nitric acid -
环己烷丁酸,Cyclohexanebutyric acid;pharmaceutical secondary standard, certified reference material
