氯化铽，Terbium(III) chloride；anhydrous, powder, 99.9% trace metals basis
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壳聚糖，Chitosan；high purity, non-animal derived, average Mw 100 kDa -
乙酸甲酯，Methyl acetate；analytical standard, ≥99.9% (GC) -
L-组氨酸，L-Histidine；suitable for manufacturing use, ≥98.5% -
正庚酸，Heptanoic acid；≥99.0% (GC) -
乙酸钙水合物，Calcium acetate hydrate；ReagentPlus®, ≥99% (titration), powder -
青霉素V钾盐，Penicillin V potassium salt；Pharmaceutical Secondary Standard; Certified Reference Material
