二硫化钨(IV),Tungsten(IV) sulfide;powder, 2 μm, 99%
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4-异丙基硫杂蒽酮,4-Isopropylthioxanthone;PESTANAL®, analytical standard -
大车前苷 [车前子甙],Plantamajoside;phyproof® Reference Substance, ≥95.0% (HPLC) -
乙酸铵 [醋酸铵],Ammonium acetate;ACS reagent, ≥97% -
L-组氨酸盐酸盐,L-Histidine hydrochloride;≥98% -
氯化锌,Zinc chloride;anhydrous, powder, ≥99.995% trace metals basis -
4-氨基偶氮苯,4-Aminoazobenzene;analytical standard
