17896-21-8

• 常用中文名：西替沃酮
• 常用英文名：Acetylhomocysteine thiolactone
• CAS号：17896-21-8
• 分子式：C₆H₉NO₂S
• 分子量：159.206
• 相关类别： 生物化工 氨基酸及其衍生物 α-氨基酸
• 发布时间：2018-05-07 08:00:00
• 更新时间：2024-01-02 10:24:20
• 医药生物化工

名称

• 中文名: 西替沃酮
• 英文名: Citiolone
• 中文别名: 胞二磷胆碱; 2-乙酰胺基-4-巯基丁酸-Γ-硫代内酯; DL-乙酰基高半胱氨酸硫醇内酯; 乙酰胺噻酮; DL-N-乙酰高半胱氨酸硫内脂
• 英文别名: Acetyl-DL-homocysteine thiolactone; N-Acetylhomocysteine thiolactone; N-(2-Oxotetrahydrothiophen-3-yl)acetamide; Acetylhomocysteine thiolactone; DL-3-ACETAMIDOTETRAHYDROTHIOPH-2-ONE; N-[(3S)-2-Oxotetrahydro-3-thiophenyl]acetamide; EINECS 214-793-8; Acetamide, N-[(3S)-tetrahydro-2-oxo-3-thienyl]-; DL-N-ACETYLHOMOCYSTEINETHIOLACTINE; citicoline diphosphate choline; MFCD00005480; N-ACETYL-DL-HOMOCYSTEINE THIOLACTONE; cdpc; DL-N-Acetylhomocysteine thiolactone

物化性质

• 密度: 1.3±0.1 g/cm3
• 沸点: 427.3±34.0 °C at 760 mmHg
• 熔点: 109-111 °C
• 分子式: C₆H₉NO₂S
• 分子量: 159.206
• 闪点: 212.2±25.7 °C
• 精确质量: 159.035400
• PSA: 71.47000
• LogP: -0.80
• 蒸汽压: 0.0±1.0 mmHg at 25°C
• 折射率: 1.542
• 储存条件:

  常温密闭避光，通风干燥

• 稳定性:

  常温常压下稳定

  避免的物料：氧化物
• 分子结构:

  1、 摩尔折射率：39.65

  2、 摩尔体积（cm³/mol）：126.0

  3、 等张比容（90.2K）：329.6

  4、 表面张力（dyne/cm）：46.7

  5、 极化率（10^-24cm³）：15.72

• 计算化学:

  1、 疏水参数计算参考值（XlogP）：-0.3

  2、 氢键供体数量：1

  3、 氢键受体数量：2

  4、 可旋转化学键数量：1

  5、 互变异构体数量：4

  6、 拓扑分子极性表面积（TPSA）：46.2

  7、 重原子数量：10

  8、 表面电荷：0

  9、 复杂度：169

  10、 同位素原子数量：0

  11、 确定原子立构中心数量：0

  12、 不确定原子立构中心数量：1

  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

• 更多:

  1. 性状：白色粉末

  2. 密度（g/mL,25/4℃）：不确定

  3. 相对蒸汽密度（g/mL,空气=1）：不确定

  4. 熔点（ºC）：109-111

  5. 沸点（ºC,常压）：不确定

  6. 沸点（ºC, 5.2kPa）：不确定

  7. 折射率：不确定

  8. 闪点（ºC）：不确定

  9. 比旋光度（º）：不确定

  10. 自燃点或引燃温度（ºC）：不确定

  11. 蒸气压（kPa,25ºC）：不确定

  12. 饱和蒸气压（kPa,60ºC）：不确定

  13. 燃烧热（KJ/mol）：不确定

  14. 临界温度（ºC）：不确定

  15. 临界压力（KPa）：不确定

  16. 油水（辛醇/水）分配系数的对数值：不确定

  17. 爆炸上限（%,V/V）：不确定

  18. 爆炸下限（%,V/V）：不确定

  19. 溶解性：在水中易溶，在乙醇、丙酮、氯仿中不溶。

MSDS

Name: DL-N-Acetylhomocysteine Thiolactone 99% Material Safety Data Sheet Synonym: 2-Acedtamido-4-Mercaptobutyric Acid y-Thiolactone; Citiolone CAS: 17896-21-8 Section 1 - Chemical Product MSDS Name:DL-N-Acetylhomocysteine Thiolactone 99% Material Safety Data Sheet Synonym:2-Acedtamido-4-Mercaptobutyric Acid y-Thiolactone; Citiolone Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS CAS# Chemical Name content EINECS# 17896-21-8 DL-N-Acetylhomocysteine Thiolactone 99 241-841-5 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. Mercaptans may cause nausea and headache. Exposure to high concentrations of mercaptans can produce unconsciousness with cyanosis (bluish discoloration of skin due to deficient oxygenation of the blood), cold extremities and rapid pulse. Inhalation: May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated. Exposure to high concentrations of mercaptans can produce unconsciousness with cyanosis (bluish discoloration of skin due to deficient oxygenation of the blood), cold extremities and rapid pulse. Mercaptans may cause nausea and headache. 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. 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: Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water. 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 agent most appropriate to extinguish fire. 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: Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions. Provide ventilation. Section 7 - HANDLING and STORAGE Handling: Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. 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. Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION Engineering Controls: Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low. Exposure Limits CAS# 17896-21-8: 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: A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use. Section 9 - PHYSICAL AND CHEMICAL PROPERTIES Physical State: Powder Color: white Odor: none reported pH: Not available. Vapor Pressure: Not available. Viscosity: Not available. Boiling Point: Not available. Freezing/Melting Point: 109.00 - 111.00 deg C Autoignition Temperature: Not applicable. Flash Point: Not applicable. Explosion Limits, lower: Not available. Explosion Limits, upper: Not available. Decomposition Temperature: Solubility in water: Specific Gravity/Density: Molecular Formula: C6H9NO2S Molecular Weight: 159.1285 Section 10 - STABILITY AND REACTIVITY Chemical Stability: Stable under normal temperatures and pressures. Conditions to Avoid: Incompatible materials, dust generation, excess heat, strong oxidants. Incompatibilities with Other Materials: Oxidizing agents. Hazardous Decomposition Products: Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide. Hazardous Polymerization: Has not been reported Section 11 - TOXICOLOGICAL INFORMATION RTECS#: CAS# 17896-21-8 unlisted. LD50/LC50: Not available. Carcinogenicity: DL-N-Acetylhomocysteine Thiolactone - 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 24/25 Avoid contact with skin and eyes. 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# 17896-21-8: No information available. Canada None of the chemicals in this product are listed on the DSL/NDSL list. CAS# 17896-21-8 is not listed on Canada's Ingredient Disclosure List. US FEDERAL TSCA CAS# 17896-21-8 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: 通常对水体是稍微有害的，不要将未稀释或大量产品接触地下水，水道或污水系统，未经政府许可勿将材料排入周围环境。

安全

• 危害码 (欧洲): T,Xi
• 风险声明 (欧洲): 25-36/37/38
• 安全声明 (欧洲): S22-S24/25
• 危险品运输编码: UN 2811 6.1/PG 3
• WGK德国: 3
• RTECS号: AC8680000