48260
D -(+)-半乳糖
suitable for microbiology, ≥99.0%
别名:
半乳糖
质量水平
方案
≥99.0% (sum of enantiomers, HPLC)
≥99.0%
表单
powder
旋光性
[α]20/D +80±1°, 24 hr, c = 5% in H2O
灼烧残渣
≤0.1% (as SO4)
缺失
≤0.1% loss on drying
mp
167-170 °C (dec.)
168-170 °C (lit.)
溶解性
H2O: 0.1 g/mL, clear, colorless
痕量阴离子
chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤50 mg/kg
痕量阳离子
As: ≤0.1 mg/kg
Ca: ≤20 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Na: ≤50 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg
应用
microbiology
SMILES字符串
OC[C@@H](O)[C@H](O)[C@H](O)[C@@H](O)C=O
InChI
1S/C6H12O6/c7-1-3(9)5(11)6(12)4(10)2-8/h1,3-6,8-12H,2H2/t3-,4+,5+,6-/m0/s1
InChI key
GZCGUPFRVQAUEE-KCDKBNATSA-N
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一般描述
Galactose, a member of a group of carbohydrates known as simple sugars (monosaccharides). It is usually found in nature combined with other sugars, as, for example, in lactose (milk sugar). Galactose is also found in complex carbohydrates (see polysaccharide) and in carbohydrate-containing lipids called glycolipids. It is used as a source of carbon and contributes to energy metabolism via its conversion to glucose by the enzymes that constitute the Leloir pathway. It is used in various media for the cultivation of bacteria and fungi. The metabolic steps of D-galactose utilization are catalysed by the GalK (galactokinase), GalT (galactose 1-phosphateuridylyl transferase), and GalE (UDP-galactose-4-epimerase) proteins.
应用
Galactose can be used as a carbohydrate source for diverse organisms for example lactobacilli, coliforms, Salmonella and streptococci. It is a simple monosaccharide that serves as an energy and carbon source for the cultivation of various of bacteria, fungi and yeasts in many industries such as food, pharmaceuticals and cosmetics
储存分类代码
11 - Combustible Solids
WGK
WGK 3
闪点(°F)
Not applicable
闪点(°C)
Not applicable
个人防护装备
Eyeshields, Gloves, type N95 (US)
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