硫酸锌七水合物,Zinc sulfate heptahydrate;puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.5%
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维生素B12 [氰钴胺素, 腈钴胺],Vitamin B12 [CN-Cbl, VB12];pharmaceutical secondary standard, certified reference material -
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去甲二氢愈创木酸,Nordihydroguaiaretic acid [NDGA];≥90% (HPLC), from Larrea divaricata (creosote bush)
