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Merck
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重要文件

48260

Millipore

D -(+)-半乳糖

suitable for microbiology, ≥99.0%

同義詞:

半乳糖

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About This Item

經驗公式(希爾表示法):
C6H12O6
CAS號碼:
分子量::
180.16
Beilstein:
1724619
EC號碼:
MDL號碼:
分類程式碼代碼:
41106212
PubChem物質ID:
NACRES:
NA.85

品質等級

化驗

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

形狀

powder

光學活性

[α]20/D +80±1°, 24 hr, c = 5% in H2O

燃燒殘留物

≤0.1% (as SO4)

損耗

≤0.1% loss on drying

mp

167-170 °C (dec.)
168-170 °C (lit.)

溶解度

H2O: 0.1 g/mL, clear, colorless

負離子痕跡

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤50 mg/kg

正離子痕跡

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

應用

microbiology

SMILES 字串

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 密鑰

GZCGUPFRVQAUEE-KCDKBNATSA-N

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一般說明

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.

應用

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

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 3

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

Eyeshields, Gloves, type N95 (US)


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