25456-86-4

• 常用中文名：L-天冬酰胺叔丁酯
• 常用英文名：L-Asparagine tert-butyl ester
• CAS号：25456-86-4
• 分子式：C₈H₁₆N₂O₃
• 分子量：188.224
• 相关类别： 生物化工 氨基酸及其衍生物 天冬酰胺类衍生物
• 发布时间：2018-09-17 21:48:11
• 更新时间：2024-01-02 18:56:43
• 下载msds

名称

• 中文名: L-天冬酰胺叔丁酯
• 英文名: tert-butyl (2S)-2,4-diamino-4-oxobutanoate
• 英文别名: asparagine tert-butyl ester; H-ASN-OBUT; H-Asn-OtBu; Asparagin-tert-butylester; L-asparagine tert-butyl ester; 2-Methyl-2-propanyl L-asparaginate; L-Asparagine, 1,1-dimethylethyl ester; asparagine t-butyl ester; MFCD04112474; tert-Butyl L-asparaginate

物化性质

• 密度: 1.1±0.1 g/cm3
• 沸点: 340.2±32.0 °C at 760 mmHg
• 分子式: C₈H₁₆N₂O₃
• 分子量: 188.224
• 闪点: 168.0±21.4 °C
• 精确质量: 188.116089
• PSA: 95.41000
• LogP: -0.01
• 外观性状: 结晶
• 蒸汽压: 0.0±0.7 mmHg at 25°C
• 折射率: 1.479
• 储存条件: 室温
• 计算化学:

  1.疏水参数计算参考值（XlogP）:-0.9

  2.氢键供体数量:2

  3.氢键受体数量:4

  4.可旋转化学键数量:5

  5.互变异构体数量:3

  6.拓扑分子极性表面积:95.4

  7.重原子数量:13

  8.表面电荷:0

  9.复杂度:208

  10.同位素原子数量:0

  11.确定原子立构中心数量:1

  12.不确定原子立构中心数量:0

  13.确定化学键立构中心数量:0

  14.不确定化学键立构中心数量:0

  15.共价键单元数量:1

MSDS

Material Safety Data Sheet Section1. Identification of the substance Product Name: H-Asn-OtBu Synonyms: Section2. Hazards identification Harmful by inhalation, in contact with skin, and if swallowed. Section3. Composition/information on ingredients. Ingredient name:H-Asn-OtBu CAS number:25456-86-4 Section4. First aid measures Skin contact:Immediately wash skin with copious amounts of water for at least 15 minutes while removing contaminated clothing and shoes. If irritation persists, seek medical attention. Eye contact:Immediately wash skin with copious amounts of water for at least 15 minutes. Assure adequate flushing of the eyes by separating the eyelids with fingers. If irritation persists, seek medical attention. Inhalation:Remove to fresh air. In severe cases or if symptoms persist, seek medical attention. Ingestion:Wash out mouth with copious amounts of water for at least 15 minutes. Seek medical attention. Section5. Fire fighting measures In the event of a fire involving this material, alone or in combination with other materials, use dry powder or carbon dioxide extinguishers. Protective clothing and self-contained breathing apparatus should be worn. Section6. Accidental release measures Personal precautions: Wear suitable personal protective equipment which performs satisfactorily and meets local/state/national standards. Respiratory precaution:Wear approved mask/respirator Hand precaution:Wear suitable gloves/gauntlets Skin protection:Wear suitable protective clothing Eye protection:Wear suitable eye protection Methods for cleaning up: Mix with sand or similar inert absorbent material, sweep up and keep in a tightly closed container for disposal. See section 12. Environmental precautions: Do not allow material to enter drains or water courses. Section7. Handling and storage Handling:This product should be handled only by, or under the close supervision of, those properly qualified in the handling and use of potentially hazardous chemicals, who should take into account the fire, health and chemical hazard data given on this sheet. Store in closed vessels, refrigerated. Storage: Section8. Exposure Controls / Personal protection Engineering Controls: Use only in a chemical fume hood. Personal protective equipment: Wear laboratory clothing, chemical-resistant gloves and safety goggles. General hydiene measures: Wash thoroughly after handling. Wash contaminated clothing before reuse. Section9. Physical and chemical properties Appearance:Not specified Boiling point:No data No data Melting point: Flash point:No data Density:No data Molecular formula:C8H16N2O3 Molecular weight:188.2 Section10. Stability and reactivity Conditions to avoid: Heat, flames and sparks. Materials to avoid: Oxidizing agents. Possible hazardous combustion products: Carbon monoxide, nitrogen oxides. Section11. Toxicological information No data. Section12. Ecological information No data. Section13. Disposal consideration Arrange disposal as special waste, by licensed disposal company, in consultation with local waste disposal authority, in accordance with national and regional regulations. Section14. Transportation information Non-harzardous for air and ground transportation. Section15. Regulatory information No chemicals in this material are subject to the reporting requirements of SARA Title III, Section 302, or have known CAS numbers that exceed the threshold reporting levels established by SARA Title III, Section 313. SECTION 16 - ADDITIONAL INFORMATION N/A

安全

• 危害码 (欧洲): Xn
• 风险声明 (欧洲): 52
• 海关编码: 2924199090

合成路线

25456-85-3 ~% 25456-86-4

文献：Helvetica chimica acta, , vol. 54, # 1 p. 398 - 422

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海关

海关编码	2924199090
中文概述	2924199090. 其他无环酰胺（包括无环氨基甲酸酯)(包括其衍生物及盐）. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:6.5%. 普通关税:30.0%
申报要素	品名, 成分含量, 用途, 包装
Summary	2924199090. other acyclic amides (including acyclic carbamates) and their derivatives; salts thereof. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%