山茶苷A,Camelliaside A;phyproof® Reference Substance, ≥90.0% (HPLC)
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左旋多巴,3,4-Dihydroxy-L-phenylalanine [L-DOPA];Pharmaceutical Secondary Standard; Certified Reference Material
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三氧化铬(VI),Chromium(VI) oxide;99.99% trace metals basis
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甲基羟乙基纤维素,Tylose® MH 300;viscosity 150-450 mPa.s, 2 % in H2O(20 °C)
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4,4′-亚甲基双(异氰酸苯酯),4,4′-Methylenebis(phenyl isocyanate) [4,4′-MDI];analytical standard, ≥98%