48519 1,4-哌嗪二乙磺酸 99.5% 25g 198
48531 1,4-哌嗪二乙磺酸 99.5% 100g 695
48540 1,4-哌嗪二乙磺酸 99.5% 500g 2783
48548 1,4-哌嗪二乙磺酸 for cell culture, ≥99% 25g 278
48549 1,4-哌嗪二乙磺酸 for cell culture, ≥99% 100g 895
48551 1,4-哌嗪二乙磺酸 for cell culture, ≥99% 500g 3190
48555 1,4-哌嗪二乙磺酸 for molecular biology,≥99.5% (T) 50g 1593
48556 1,4-哌嗪二乙磺酸 for molecular biology,≥99.5% (T) 250g 5991
48557 1,4-哌嗪二乙磺酸 99% 25g 89
48562 1,4-哌嗪二乙磺酸 99% 100g 199
48566 1,4-哌嗪二乙磺酸 99% 500g 797
白色粉末。 pH range 6.1 - 7.5 pKa (25 °C) 6.8 熔点：＞300℃
99%： 外观Appearance white crystalline powder 红外光谱Infrared spectrometry Conforms to Structure 纯度Purity(by sulfuric acid titration) ≥99.0% UV absorbance ≤0.1 at 290nm (20%w/w in 1N NaOH) 水分Water (by Karl Fischer) ≤3% 重金属heavy metals (as lead) ≤ 5ppm 溶解性solubility clear colorless solution at 20g plus 80ml of 1N NaOH 99.5%,超纯级: 灼烧残渣Residue on ignition ≤0.2% (as SO4) loss on drying, 110 °C ≤0.2% useful pH range 6.1 - 7.5 pKa (25 °C) 6.8 碱溶性solubility 0.1 M NaOH: soluble0.1 M at 20 °C, clear, colorless anion traces 氯chloride (Cl-): ≤200 ppm 硫酸根离子sulfate (SO42-): ≤50 ppm cation traces Al: ≤5 ppm As: ≤0.1 ppm Ba: ≤5 ppm Bi: ≤5 ppm Ca: ≤10 ppm Cd: ≤5 ppm Co: ≤5 ppm Cr: ≤5 ppm Cu: ≤5 ppm Fe: ≤5 ppm K: ≤50 ppm Li: ≤5 ppm Mg: ≤5 ppm Mn: ≤5 ppm Mo: ≤5 ppm Na: ≤100 ppm Ni: ≤5 ppm Pb: ≤5 ppm Sr: ≤5 ppm Zn: ≤5 ppm λ 0.1 M in 1 M NaOH UV absorption λ: 260 nm A: ≤0.055 λ: 280 nm A: ≤0.040 品级Grade 细胞培养级 (for cell culture, ≥99%) 外观Appearance white crystalline powder 红外光谱Infrared spectrometry Conforms to Structure 纯度Purity(by sulfuric acid titration) ≥99.0% UV absorbance ≤0.1 at 290nm (20%w/w in 1N NaOH) 水分Water (by Karl Fischer) ≤3% 重金属heavy metals (as lead) ≤ 5ppm 溶解性solubility clear colorless solution at 20g plus 80ml of 1N NaOH RNASE, DNASE, NICKASE AND PROTEASE none detected 内毒素endotoxin assay NMT 0.1 EU/MG 标准平板细菌计数standard plate count NMT 100 CFU/G 细胞培养测试cell culture test pass 品级Grade 分子生物学级 (for molecular biology,≥99.5% (T)) DNA酶DNases, none detected RND酶RNases, none detected 不溶物insoluble matter, passes filter test 磷酸酶phosphatases, none detected 蛋白酶proteases, none detected 灼烧残渣Residue on ignition ≤0.2% (as SO4) loss on drying, 110 °C ≤0.2% useful pH range 6.1 - 7.5 pKa (25 °C) 6.8 碱溶性solubility 0.1 M NaOH: soluble0.1 M at 20 °C, clear, colorless anion traces 氯chloride (Cl-): ≤200 ppm 硫酸根离子sulfate (SO42-): ≤50 ppm cation traces Al: ≤5 ppm As: ≤0.1 ppm Ba: ≤5 ppm Bi: ≤5 ppm Ca: ≤10 ppm Cd: ≤5 ppm Co: ≤5 ppm Cr: ≤5 ppm Cu: ≤5 ppm Fe: ≤5 ppm K: ≤50 ppm Li: ≤5 ppm Mg: ≤5 ppm Mn: ≤5 ppm Mo: ≤5 ppm Na: ≤100 ppm Ni: ≤5 ppm Pb: ≤5 ppm Sr: ≤5 ppm Zn: ≤5 ppm λ 0.1 M in 1 M NaOH UV absorption λ: 260 nm A: ≤0.055 λ: 280 nm A: ≤0.040

mRNA的杂交选择 -预杂交缓冲液组分。