在线客服 客服软件
在线客服系统

图标

产品价格(Market Price)

订货、咨询、索取资料、请联系BELLANCOM客服

中文名(CN) 英文名(EN) CAS No. 规格(SP) 报价(CNY) 产地(From) 类别(Key)
L-组氨酸 L-Histidine (cell culture tested, ≥98.5%) 71-00-1 25G 350.00 Sigma-H6034 氨基酸
L-组氨酸 L-Histidine (cell culture tested, ≥98.5%) 71-00-1 100G 1150.00 Sigma-H6034 氨基酸
L-组氨酸 L-Histidine (cell culture tested, ≥98.5%) 71-00-1 500G 4600.00 Sigma-H6034 氨基酸

图标

数据参数(Specifications)

免费开具北京商业企业专用发票,签订正规销售合同,Bellcom正品保证,免费技术支持,免收境内运费。

中文名称 L-A-氨基-β-4-咪唑基丙酸;L-组氨酸;(S)-2-氨基-3-(4-咪唑基)丙酸;组氨酸;L-组织氨基酸;Α-氨基-1H-咪唑-4-丙酸;L-组氨酸
英文名称 L-Histidine;1H-Imidazole-4-propanoic acid, alpha-amino-, (S)-;3-(1h-imidazol-4-yl)-l-alanin
CAS识别号 71-00-1
MDL识别号 MFCD00064315
EC识别号 200-745-3
Beilstein 84088
分子式 C6H9N3O2
分子量 155.15
分子结构图 分子图
产品性状 白色晶体或结晶性粉末。无臭。稍有苦味。约于277~288℃熔化并分解。其咪唑基易与金属离子形成络盐。溶于水(4.3g/100ml,25℃),极难溶于乙醇,不溶于乙醚。因溶解度极小等原因,常用者为其盐酸盐。
质量标准 99.9%:

外观Appearance                                             白色结晶粉末,光照下会有颜色
红外光谱鉴别Infrared spectrometry                 和对照品匹配
含量Assay                                                       >99.9% (以无水物计)
干燥失重Loss on drying                                  <0.2 % (105°C, 3 hrs)
重金属Heavy metals (as Pb)                            <10 ppm
硫酸盐灰分Sulfated ash                                  <0.1 %
比旋度Specific rotation [a]20/D                       +12° ~ +12.8°(c=11, 6 N HCl)  
NH4                                                                 < 100 ppm
Cl                                                                     < 100 ppm
SO4                                                                 < 100 ppm
Fe                                                                    < 10 ppm
透光率Transmittance                                        >98 % (c=5, H2O, 430 nm) 1 cm cell
pH                                                                    7 - 8.5 (2% 水溶液)
其它氨基酸Foreign amino acids                         <0.3 % (TLC)

99.5%
外观Appearance                                             白色结晶粉末,光照下会有颜色
红外光谱鉴别Infrared spectrometry                 和对照品匹配
纯度Purity(GC)                                               ≥99.5 %

EP, USP ,非动物源,用于细胞培养:


来源ORIGIN                                                   from non-animal source
外观Appearance                                              白色至类白色结晶粉末
红外鉴别IDENTIFICATION BY IR                   和参考标准一致
水溶解试验solubility in water                         无色溶液 0.5G/10ML水
比旋光度Specific rotation [a]20/D                  +12.0°~ +12.8°(20°C /EP)
                                                                        +12.6 ~ +14.0 DEG (25°C /USP)
                                                                        C = 11 , 6M HCL
氯Chloride                                                       ≤0.020%
铵Ammonium                                                   ≤0.02%
硫酸根Sulfate                                                  ≤0.020%
铁Iron                                                              ≤ PPM
重金属Heavy metals                                        ≤10 PPM
砷Arsenic                                                         ≤ 1 PPM
干燥损失Loss on drying                                  ≤0.20%
灼烧残渣Residue on ignition                            ≤0.10%
茚三酮阳性物质Ninhydrin-positive Substances(OTHER AMINO ACIDS)
                                                                       CONFORMS
溶剂残渣Residual solvents                             MEETS THE REQUIREMENTS
PH TEST                                                        7.0 ~ 8.5 (2% IN WATER)
含量ASSAY (DRY BASIS)                              98.5 ~ 101.0%
内毒素Endotoxin                                            ≤ 1 EU/MG
细胞培养测试Cell culture test                           PASS
储存条件 常温密封避光保存,Stored in cool, dry and airproof.
包装说明 Bellancom原装进口,正品保证,Bellancom Chemistry The original.
购买建议 Bellancom Chemistry温馨提示:试剂是一种特殊的商品,购买试剂请联系正规企业,防范骗子公司承诺的低价陷阱,我们建议您,在选择供应商时:一要查看“品牌代理授权书”,必要时可向原厂家电话核实;二要索取“正规机打商业企业专用发票”;三 要签订正规试剂购买合同。以上三条是一家正规企业最基本的资质,同时齐备,方可办理汇款,切勿轻信口头承诺,以免上当受骗!