2,4-吡啶二羧酸,2,4-Pyridinedicarboxylic acid;≥98.0%
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L-同型半胱氨酸-d4,L-Homocysteine-d4
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苦番紅花素 [苦藏花素],Picrocrocin;phyproof® Reference Substance, ≥90.0% (HPLC)
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1,4-二羟基-2-萘甲酸,1,4-Dihydroxy-2-naphthoic acid;97%
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三氧化钨(VI),Tungsten(VI) oxide;powder, 99.995% trace metals basis
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4-氨基苯甲酸,4-Aminobenzoic acid [4-ABA, PABA];ReagentPlus®, 99%
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N-[三(羟甲基)甲基]-3-氨基丙磺酸,TAPS;Vetec™, reagent grade, 99.5%