联苯-4,4′-二硫醇,Biphenyl-4,4′-dithiol [BDT, BPDT];95%
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枸橼酸西地那非,Sildenafil Citrate;Pharmaceutical Secondary Standard; Certified Reference Material
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乙胺溶液,Ethylamine solution;2.0 M in THF
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三氧化铬(VI),Chromium(VI) oxide;for analysis EMSURE®, ≥99.0% (iodometric)
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穗花杉双黄酮,Amentoflavone;analytical standard, ≥98.0% (HPLC)
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二氧化钛(IV),Titanium(IV) oxide;ReagentPlus®, ≥99%