19542-77-9

• 常用中文名：S-苄基-N-乙酰基-L-半胱氨酸
• 常用英文名：n-acetyl-s-benzyl-l-cysteine
• CAS号：19542-77-9
• 分子式：C₁₂H₁₅NO₃S
• 分子量：253.31700
• 相关类别： 生物化工 氨基酸及其衍生物 半胱氨酸类衍生物
• 发布时间：2018-03-31 08:00:00
• 更新时间：2024-01-05 02:09:09

名称

• 中文名: N-乙酰基卞基半胱氨酸
• 英文名: n-acetyl-s-benzyl-l-cysteine
• 中文别名: N-乙酰基-s-苄基-l-半胱氨酸; S-苄基-N-乙酰基-L-半胱氨酸
• 英文别名: ACETYL BENZYL CYSTEINE; S-Benzyl-N-acetyl-L-cystein; Benzylmercapturic Acid; N-acetyl-S-benzyl cysteine; MFCD00038237; N-Acetyl-S-benzyl-L-cystein; s-benzyl-n-acetyl-l-cysteine; N-Acetyl-S-phenyl-L-cysteine methyl ester; S-benzyl mercapturic acid

物化性质

• 密度: 1.246 g/cm3
• 沸点: 506.2ºC at 760 mmHg
• 熔点: 144-146°C
• 分子式: C₁₂H₁₅NO₃S
• 分子量: 253.31700
• 闪点: 259.9ºC
• 精确质量: 253.07700
• PSA: 91.70000
• LogP: 1.90000
• 外观性状: 白色至黄色结晶粉末
• 蒸汽压: 4.55E-11mmHg at 25°C
• 储存条件:

  密闭于0-6 ºC阴凉干燥环境中

• 稳定性:

  遵照规定使用和储存则不会分解。

• 分子结构:

  1、 摩尔折射率：67.47

  2、 摩尔体积（m³/mol）：203.1

  3、 等张比容（90.2K）：545.8

  4、 表面张力（dyne/cm）：52.0

  5、 极化率（10^-24cm³）：26.75

• 计算化学:

  1、 疏水参数计算参考值（XlogP）：2

  2、 氢键供体数量：1

  3、 氢键受体数量：3

  4、 可旋转化学键数量：5

  5、 拓扑分子极性表面积（TPSA）：69.2

  6、 重原子数量：17

  7、 表面电荷：-1

  8、 复杂度：259

  9、 同位素原子数量：0

  10、 确定原子立构中心数量：1

  11、 不确定原子立构中心数量：0

  12、 确定化学键立构中心数量：0

  13、 不确定化学键立构中心数量：0

  14、 共价键单元数量：1

• 更多:

  1. 性状：无可用

  2. 密度（g/mL,25/4℃）：无可用

  3. 相对蒸汽密度（g/mL,空气=1）：无可用

  4. 熔点（ºC）：144-146

  5. 沸点（ºC,常压）：无可用

  6. 沸点（ºC,5.2kPa）：无可用

  7. 折射率：无可用

  8. 闪点（ºC）：无可用

  9. 比旋光度（º）：无可用

  10. 自燃点或引燃温度（ºC）：无可用

  11. 蒸气压（kPa,25ºC）：无可用

  12. 饱和蒸气压（kPa,60ºC）：无可用

  13. 燃烧热（KJ/mol）：无可用

  14. 临界温度（ºC）：无可用

  15. 临界压力（KPa）：无可用

  16. 油水（辛醇/水）分配系数的对数值：无可用

  17. 爆炸上限（%,V/V）：无可用

  18. 爆炸下限（%,V/V）：无可用

  19. 溶解性：无可用

MSDS

Name: n-Acetyl-s-phenyl-l-cysteine methyl ester Material Safety Data Sheet Synonym: CAS: 19542-77-9 Section 1 - Chemical Product MSDS Name:n-Acetyl-s-phenyl-l-cysteine methyl ester Material Safety Data Sheet Synonym: Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS CAS# Chemical Name content EINECS# 19542-77-9 N-acetyl-s-phenyl-l-cysteine methyl es 100.0 unlisted Hazard Symbols: None Listed. Risk Phrases: None Listed. Section 3 - HAZARDS IDENTIFICATION EMERGENCY OVERVIEW The toxicological properties of this material have not been fully investigated. Potential Health Effects Eye: May cause eye irritation. Skin: May cause skin irritation. Ingestion: May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated. Inhalation: May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated. Chronic: No information found. Section 4 - FIRST AID MEASURES Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. Skin: Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Ingestion: If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately. Inhalation: Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. Notes to Physician: Section 5 - FIRE FIGHTING MEASURES General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or appropriate foam. Section 6 - ACCIDENTAL RELEASE MEASURES General Information: Use proper personal protective equipment as indicated in Section 8. Spills/Leaks: Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Provide ventilation. Section 7 - HANDLING and STORAGE Handling: Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Storage: Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep refrigerated. (Store below 4C/39F.) Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION Engineering Controls: Use adequate ventilation to keep airborne concentrations low. Exposure Limits CAS# 19542-77-9: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure. Respirators: Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced. Section 9 - PHYSICAL AND CHEMICAL PROPERTIES Physical State: Crystalline powder Color: white to light yellow Odor: Not available. pH: Not available. Vapor Pressure: Not available. Viscosity: Not available. Boiling Point: Not available. Freezing/Melting Point: 139-143 C Autoignition Temperature: Not available. Flash Point: Not available. Explosion Limits, lower: Not available. Explosion Limits, upper: Not available. Decomposition Temperature: Solubility in water: Specific Gravity/Density: Molecular Formula: C12H15NO3S Molecular Weight: 253.32 Section 10 - STABILITY AND REACTIVITY Chemical Stability: Stable under normal temperatures and pressures. Conditions to Avoid: Incompatible materials, strong oxidants. Incompatibilities with Other Materials: Oxidizing agents. Hazardous Decomposition Products: Irritating and toxic fumes and gases. Hazardous Polymerization: Has not been reported Section 11 - TOXICOLOGICAL INFORMATION RTECS#: CAS# 19542-77-9 unlisted. LD50/LC50: Not available. Carcinogenicity: N-acetyl-s-phenyl-l-cysteine methyl ester - Not listed by ACGIH, IARC, or NTP. Section 12 - ECOLOGICAL INFORMATION Section 13 - DISPOSAL CONSIDERATIONS Dispose of in a manner consistent with federal, state, and local regulations. Section 14 - TRANSPORT INFORMATION IATA Not regulated as a hazardous material. IMO Not regulated as a hazardous material. RID/ADR Not regulated as a hazardous material. Section 15 - REGULATORY INFORMATION European/International Regulations European Labeling in Accordance with EC Directives Hazard Symbols: Not available. Risk Phrases: Safety Phrases: S 7/8 Keep container tightly closed and dry. S 28A After contact with skin, wash immediately with plenty of water. S 37 Wear suitable gloves. S 45 In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible). WGK (Water Danger/Protection) CAS# 19542-77-9: No information available. Canada None of the chemicals in this product are listed on the DSL/NDSL list. CAS# 19542-77-9 is not listed on Canada's Ingredient Disclosure List. US FEDERAL TSCA CAS# 19542-77-9 is not listed on the TSCA inventory. It is for research and development use only. SECTION 16 - ADDITIONAL INFORMATION N/A

毒性和生态

生态学数据: 该物质对环境可能有危害，对水体应给予特别注意。

安全

• 危害码 (欧洲): T
• 风险声明 (欧洲): R52/53:Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment . R33:Danger of cumulative effects. R23/24/25:Toxic by inhalation, in contact with skin and if swallowed .
• 安全声明 (欧洲): S61-S45-S36/37-S28A-S28
• 危险品运输编码: 1711
• 包装等级: II
• 危险类别: 6.1(a)
• 海关编码: 2930909090

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