D-半乳糖/D-(+)-吡喃葡萄糖/D-(+)-Galactose,99.5%
- 产品编号：G0121
- 中文名称：D-半乳糖/D-(+)-吡喃葡萄糖/D-(+)-Galactose
- 英文名称：D-(+)-Galactose
- 英文别名:D-(+)-Galactose
- CAS号:59-23-4
- 分子式:C6H12O6
- 分子量:180.16
- 纯度:99.5%
- EC号:200-416-4
- MDL号:MFCD00151230
订货信息：
产品规格价格(RMB)
- G0121-25G40
- G0121-100G150
- G0121-250G220
- G0121-6x100G700
- G0121-4x250G1000
性能描述
| 试剂等级 |
生化试剂 |
| 试剂纯度 |
≥99.5% (sum of enantiomers, HPLC) |
| optical activity |
[α]20/D +80±1°, 24 hr, c = 5% in H2O |
| impurities |
insoluble matter, passes filter test |
| ign. residue |
≤0.05% (as SO4) |
| loss |
≤0.05% loss on drying |
| pH |
5.0-7.0 (25 °C, 1 M in H2O) |
| mp |
168-170 °C(lit.) |
| solubility |
H2O: soluble1 M at 20 °C, clear, colorless |
D-(+)-Galactose (D-Gal) is a component with glucose of the disaccharide lactose. Galactose may be used in studies on galactose metabolism as the substrate for indentificaiton, differentiation and characterization of enzymes such as galactose oxidase(s) (GO), galactose permease(s), galactose kinase(s), and galactose phosphorylase(s). D-Gal is used in the study of Maillard glycation and its consequences in vivo.
| 性状： |
白色或几乎白色粉末,无气味,微具甜味,能溶于水和吡啶,水中溶解度:680 g/L (25°C)；微溶于甘油和醇。半乳糖是一种由六个碳和一个醛组成的单糖,归类为醛糖和己糖。D-半乳糖和L-半乳糖均天然存在。D-半乳糖一般作为乳糖的结构部分存在于牛奶中,牛奶中的乳糖被人体分解为葡萄糖和半乳糖被吸收利用。 |
