48260

D -(+)-半乳糖

suitable for microbiology, ≥99.0%

• 别名: 半乳糖
• 经验公式（希尔记法）: C₆H₁₂O₆
• CAS号: 59-23-4
• 分子量: 180.16
• Beilstein: 1724619
• EC號碼: 200-416-4
• MDL號碼: MFCD00151230
• 分類程式碼代碼: 41106212
• PubChem物質ID: 329757362
• NACRES: NA.85

属性

• 品質等級: 200
• 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 (SO₄^2-): ≤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

说明

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

安全信息

• 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)