商品名:L-胱氨酸
别 名:L-膀胱氨基酸,双硫代氨基丙酸
L(-)-3,3'-Dithiobis(2-aminopropanoic acid)
2-Amino-3-[(2-amino-2-carboxyethyl)dithio]propanoic acid
(R,R)-3,3'-Dithiobis(2-aminopropionicacid)
英文名:L-Cystine
产 地:湖南
Cas号:56-89-3
MDL:MFCD00064228
Beilstein:1728094
EINECS:200-296-3
分子结构:
分子式:C6H12N2O4S2
分子量:240.3000
备注:以上描述,仅作参考,并不表示您收到的产品,与此项描述完全相符,产品的出厂标准,请参见质量标准。
性状:白色片状结晶,溶于酸和碱性溶液,不溶于乙醇、乙醚、苯和三氯甲烷。溶解度:0.112g/L水(25°C), 24mg/100mL水(50°C)、52 mg/100mL 水 (75°C)、114 mg/100mL 水(100°C)。
熔点: >240℃(dec.)
[a]20/D: -224° (c=2;1 M HCL)
质量标准:99%:
外观Appearance 白色结晶粉末
红外光谱鉴别Infrared spectrometry 和对照品匹配
纯度Purity ≥99.0% (T)
干燥损失Loss on drying
重金属Heavy metals (as Pb)
硫酸盐灰分Sulfated ash
比旋光度Specific rotation [a]20/D -211° ~ -224° (c=2, 1 M HCl)
Fe < 10 ppm
Cl < 100 ppm
NH4 < 100 ppm
SO4 < 100 ppm
99.5%:
含量assay ≥99.5% (T)
比旋光度Specific rotation [a]20/D -214° ~ -224° (c=2, 1 M HCl)
不溶物insoluble matter, passes filter test
其它氨基酸foreign amino acids ≤0.3%
灼烧残渣ign. residue ≤0.05% (as SO4)
干燥损失loss on drying, 20 °C (HV) ≤0.05%
盐酸溶解试验solubility in 1 M HCl soluble 0.2 M at 20 °C, clear, colorless
氯chloride (Cl-): ≤500 ppm
硫酸根sulfate (SO42-): ≤100 ppm
痕量阳离子cation traces by ICP Atomic emission
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: ≤10 ppm
K: ≤50 ppm
Li: ≤5 ppm
Mg: ≤5 ppm
Mn: ≤5 ppm
Mo: ≤5 ppm
Na: ≤50 ppm
Ni: ≤5 ppm
Pb: ≤5 ppm
Sr: ≤5 ppm
Zn: ≤5 ppm
abs. absorption0.2M/316 nm, 1 M HCl cut-off
品级Grade 非动物源,达到EP标准,用于细胞培养
(≥99%, from non-animal source, for cell culture)
外观Appearance 白色结晶粉末
红外光谱鉴别Infrared spectrometry Conforms
水溶性solubility clear colorless solution at 1g to 10ml of 2m hydrochloric acid
残留溶剂residual solvents meets the requirements
干燥损失Loss on Drying ≤0.50 %
灼烧残渣Residue on ignition (Ash) ≤0.10 %
内毒素Endotoxin Level ≤1 EU/mg
细胞培养测试Cell Culture Test Pass
比旋光度Specific rotation [a]20/D -218 to -224°(c = 2 in 1m hydrochloric acid)
氯Chloride ≤0.02 %
硫酸根Sulfate ≤0.03 %
铁Iron ≤10.0 ppm
重金属Heavy metals ≤10.0 ppm
铵Ammonium ≤200.0 ppm
砷Arsenic ≤1 ppm
茚三酮阳性物质Ninhydrin positive substances (each) conforms
含量Assay(dry basis) 98.5 to 101.0%
水溶解试验Solubility in water at 20 °C 280 g/l
pH 4.5 - 6
来源Origin must be non-animal source
存储:密封阴凉干燥避光保存。
用途:某些肿瘤细胞系需要胱氨酸或在培养基中半胱氨酸;各种微生物的生长必须物质
联合编号:
RISK:
Safety:
Hazard: