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48260

D -(+)-半乳糖

Name: <SC>D </SC>-(+)-半乳糖
Brand: SIAL

suitable for microbiology, ≥99.0%

别名:

半乳糖

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关于此项目

经验公式（希尔记法）:

C₆H₁₂O₆

化学文摘社编号:

59-23-4

分子量:

180.16

UNSPSC Code:

41106212

NACRES:

NA.85

PubChem Substance ID:

329757362

EC Number:

200-416-4

Beilstein/REAXYS Number:

1724619

MDL number:

MFCD00151230

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属性

Quality Level

200

assay

≥99.0% (sum of enantiomers, HPLC), ≥99.0%

form

powder

optical activity

[α]20/D +80±1°, 24 hr, c = 5% in H₂O

ign. residue

≤0.1% (as SO₄)

loss

≤0.1% loss on drying

mp

167-170 °C (dec.), 168-170 °C (lit.)

solubility

H₂O: 0.1 g/mL, clear, colorless

anion traces

chloride (Cl^-): ≤50 mg/kg, sulfate (SO₄^2-): ≤50 mg/kg

cation traces

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

application(s)

microbiology

SMILES string

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

说明

General description

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.

Application

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

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存储类别

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

法规信息

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