L-蛋氨酸 (CAS No.63-68-3)
- 物化性质
- 无色或白色有光泽片状结晶或白色结晶性粉末，稍带特殊气味，味微苦。熔点280-281℃（分解）。对强酸不稳定，可导致脱甲基作用。溶于水（5.6g/100ml，30℃）、温热的稀乙醇、碱性溶液和稀无机酸；难溶于乙醇，几乎不溶于乙醚。
English description（英文原文，共 983 字符）
Product Name:L-Methionine
English Name:L-Methionine
CAS No.:63-68-3
Aliases:Methionine, L-2-amino-4-(methylthio)butanoic acid
Molecular Formula:C5H11NO2S
Physical Properties:Colorless or white lustrous flaky crystals or white crystalline powder, with a slight special odor and a slightly bitter taste. Melting point: 280-281°C (decomposition). Unstable to strong acids, which can cause demethylation. Soluble in water (5.6 g/100 mL at 30°C), warm dilute ethanol, alkaline solutions, and dilute inorganic acids; sparingly soluble in ethanol, almost insoluble in ether.
Uses:Nutritional supplement; one of the essential amino acids for the human body. Used in health foods, beverages, and pharmaceuticals, as well as a food additive.
Technical Specifications:
Content (on dry basis): 98.5%-101.5%
Specific rotation: +21° to +25°
Loss on drying (105°C, 2h): ≤0.5%
Residue on ignition: ≤0.1%
Impurity limits: arsenic ≤1.5 mg/kg, heavy metals (as Pb) ≤20 mg/kg, lead ≤10 mg/kg
English Name:L-Methionine
CAS No.:63-68-3
Aliases:Methionine, L-2-amino-4-(methylthio)butanoic acid
Molecular Formula:C5H11NO2S
Physical Properties:Colorless or white lustrous flaky crystals or white crystalline powder, with a slight special odor and a slightly bitter taste. Melting point: 280-281°C (decomposition). Unstable to strong acids, which can cause demethylation. Soluble in water (5.6 g/100 mL at 30°C), warm dilute ethanol, alkaline solutions, and dilute inorganic acids; sparingly soluble in ethanol, almost insoluble in ether.
Uses:Nutritional supplement; one of the essential amino acids for the human body. Used in health foods, beverages, and pharmaceuticals, as well as a food additive.
Technical Specifications:
Content (on dry basis): 98.5%-101.5%
Specific rotation: +21° to +25°
Loss on drying (105°C, 2h): ≤0.5%
Residue on ignition: ≤0.1%
Impurity limits: arsenic ≤1.5 mg/kg, heavy metals (as Pb) ≤20 mg/kg, lead ≤10 mg/kg
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常见问题
- L-蛋氨酸的 CAS 号是多少？
- L-蛋氨酸的 CAS 号是 63-68-3。
- L-蛋氨酸的分子式和分子量是什么？
- L-蛋氨酸的分子式为 C5H11NO2S。
- L-蛋氨酸的英文名称是什么？
- L-蛋氨酸的英文名称为 L-Methionine。
- L-蛋氨酸还有哪些别名？
- L-蛋氨酸又称 甲硫氨酸、L-甲硫氨酸、L-2-氨基-4-甲硫基丁酸。
- L-蛋氨酸有哪些供应商和生产厂家？
- 掌上化工当前收录 1 条L-蛋氨酸供应报价，来自 1 家供应商，可按地区、纯度、级别筛选对比。
- L-蛋氨酸的供应商主要分布在哪些地区？
- L-蛋氨酸的供应商主要分布在 上海市（1 条） 等地。
- L-蛋氨酸有哪些级别可选？
- 平台上L-蛋氨酸的供应级别包括 工业级。
- L-蛋氨酸的报价单位是什么？
- L-蛋氨酸的报价单位主要有 千克。
- 哪里可以查到L-蛋氨酸的价格？
- 掌上化工L-蛋氨酸产品页汇总了各供应商的最新报价与规格，地址：/chemicals/63-68-3/。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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