D-半乳糖 (CAS No.59-23-4)
- 物化性质
- 白色晶体或结晶性粉末，无臭，味甜。易溶于水，微溶于乙醇，不溶于乙醚。熔点约167℃，比旋光度[α]D20为+79°至+81°（c=4, H2O）。是琼脂、植物树胶、棉子糖、乳糖、蜜二糖等糖类的组分，游离态存在于乳汁中，与葡萄糖结合构成乳糖，经硝酸氧化可得到黏液酸。
- 技术参数
- 含量（HPLC）≥99.0% 比旋光度[α]D20为+79.0°至+81.0°（c=4, H2O） 熔点167~170℃ 干燥失重≤0.5% 灼烧残渣≤0.1%
English description（英文原文，共 1136 字符）
Product Name:D-Galactose
English Name:D-Galactose
CAS No.:59-23-4
Aliases:Galactose, Dextrogalactose, D-(+)-Galactose
Molecular Formula:C6H12O6
Physical Properties:White crystals or crystalline powder, odorless, sweet taste. Freely soluble in water, slightly soluble in ethanol, insoluble in ether. Melting point about 167 °C, specific rotation [α]D20 +79° to +81° (c=4, H2O). It is a component of agar, plant gums, raffinose, lactose, melibiose and other sugars. The free form exists in milk; it combines with glucose to form lactose, and oxidation with nitric acid yields mucic acid.
Uses:Mainly used as a food sweetener and a substitute for non-nutritive sweeteners; in biochemistry, it is used as a cell culture medium component and a reagent for carbohydrate metabolism research; it also serves as an intermediate in pharmaceutical synthesis and nutritional supplements, such as for the preparation of galactose derivatives and diagnostic reagents.
Technical Specifications:
Assay (HPLC) ≥99.0%
Specific rotation [α]D20 +79.0° to +81.0° (c=4, H2O)
Melting point 167-170 °C
Loss on drying ≤0.5%
Residue on ignition ≤0.1%
English Name:D-Galactose
CAS No.:59-23-4
Aliases:Galactose, Dextrogalactose, D-(+)-Galactose
Molecular Formula:C6H12O6
Physical Properties:White crystals or crystalline powder, odorless, sweet taste. Freely soluble in water, slightly soluble in ethanol, insoluble in ether. Melting point about 167 °C, specific rotation [α]D20 +79° to +81° (c=4, H2O). It is a component of agar, plant gums, raffinose, lactose, melibiose and other sugars. The free form exists in milk; it combines with glucose to form lactose, and oxidation with nitric acid yields mucic acid.
Uses:Mainly used as a food sweetener and a substitute for non-nutritive sweeteners; in biochemistry, it is used as a cell culture medium component and a reagent for carbohydrate metabolism research; it also serves as an intermediate in pharmaceutical synthesis and nutritional supplements, such as for the preparation of galactose derivatives and diagnostic reagents.
Technical Specifications:
Assay (HPLC) ≥99.0%
Specific rotation [α]D20 +79.0° to +81.0° (c=4, H2O)
Melting point 167-170 °C
Loss on drying ≤0.5%
Residue on ignition ≤0.1%
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常见问题
- D-半乳糖的 CAS 号是多少？
- D-半乳糖的 CAS 号是 59-23-4。
- D-半乳糖的分子式和分子量是什么？
- D-半乳糖的分子式为 C6H12O6。
- D-半乳糖的英文名称是什么？
- D-半乳糖的英文名称为 D-Galactose。
- D-半乳糖还有哪些别名？
- D-半乳糖又称 半乳糖、右旋半乳糖、D-(+)-半乳糖。
- D-半乳糖有哪些供应商和生产厂家？
- 掌上化工当前收录 1 条D-半乳糖供应报价，来自 1 家供应商，可按地区、纯度、级别筛选对比。
- D-半乳糖的供应商主要分布在哪些地区？
- D-半乳糖的供应商主要分布在 上海市（1 条） 等地。
- D-半乳糖有哪些级别可选？
- 平台上D-半乳糖的供应级别包括 工业级。
- D-半乳糖的报价单位是什么？
- D-半乳糖的报价单位主要有 千克。
- 哪里可以查到D-半乳糖的价格？
- 掌上化工D-半乳糖产品页汇总了各供应商的最新报价与规格，地址：/chemicals/59-23-4/。部分供应商价格为电议，可通过页面上的询价功能直接获取。
以上信息由平台根据收录的产品数据自动生成，数据更新时间 。 价格与库存由供应商自行发布，实际交易请以询价结果为准。
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