53857 烟酸 用于植物细胞培养，≥99% 500g 333
53858 烟酸 用于细胞和昆虫细胞培养，≥99% 500g 333
53859 烟酸 用于细胞和昆虫细胞培养，≥99% 100g 233
53863 烟酸 分析标准品 20mg 155
53864 烟酸 AR 100g 98
53871 烟酸 分析标准品，≥99.5% (HPLC) 250mg 330
53875 烟酸 AR 500g 335
53877 烟酸 AR 25g 28
无气味。味微酸。在空气中不潮解而稳定。能升华而不分解。溶解度: 17 g/L水 (20°C) ；微溶于乙醇(10 g/L 20°C), ，易溶于沸水、沸醇，溶于丙二醇、氯仿、氢氧化碱和碳酸碱溶液，不溶于醚及脂类溶剂。饱和水溶液的pH2.7。*吸收波长263nm。 熔点：238℃ 密度：1.473
外观Appearance 白色至类白色结晶粉末 红外光谱鉴别Infrared spectrometry 符合 纯度Purity ≥99.0% (HPLC) 纯度Purity 99.5 ～ 100.5 % (中和滴定) 熔点Melting point 234°C - 240°C 热水溶解试验solubility in water 合格 干燥损失Loss on drying <1.0 % 硫酸盐灰分Sulfated ash <0.1 % 重金属Heavy metals (as Pb) <20 ppm 氯离子Chloride(Cl) <200 ppm 相关物质Related substances Pass test 品级Grade 用于细胞和昆虫细胞培养，≥99% (for cell culture, for insect cell culture, ≥99%) 外观appearance white to off-white powder 碱溶性solubility clear colorless to very faint yellow solution at 50mg/ml in 1M sodium hydroxide 红外光谱IR spectrum conforms to structure 纯度purity by sodium hydroxide titration ≥99% 纯化purity by HPLC ≥99% 细胞培养测试cell culture test pass 昆虫细胞培养测试insect cell test pass 品级Grade 用于植物细胞培养，≥99% (for plant cell culture, ≥99%) 外观appearance white to off-white powder 碱溶性solubility clear colorless to very faint yellow solution at 50mg/ml in 1M sodium hydroxide 红外光谱IR spectrum conforms to structure 纯度purity by sodium hydroxide titration ≥99% 纯化purity by HPLC ≥99% 植物细胞培养测试Plant cell culture test pass

营养剂，配制组织培养基。