644-06-4

• 常用中文名：早熟素Ⅱ
• 常用英文名：6,7-Dimethoxy-2,2-dimethylchromene
• CAS号：644-06-4
• 分子式：C₁₃H₁₆O₃
• 分子量：220.26
• 相关类别： 天然产物 酚类
• 发布时间：2018-03-19 08:00:00
• 更新时间：2024-01-02 15:44:11
• 早新世II是抗虫保幼激素[1]。

名称

• 中文名: 早熟素Ⅱ
• 英文名: precocene II
• 中文别名: 6,7-二甲氧基-2,2-二甲基-3-色烯; 早熟素 II; 6,7-二甲氧基-2,2-二甲基-2H-1-苯并吡喃
• 英文别名: 2H-1-BENZOPYRAN,6,7-DIMETHOXY-2,2-DIMETHYL; 6,7-dimethoxy-2,2-dimethyl-3-chromene; EINECS 211-408-5; 6,7-Dimethoxy-2,2-dimethyl-2H-1-benzopyran; precocenes II; 2H-1-Benzopyran, 6,7-dimethoxy-2,2-dimethyl-; 6,7-Dimethoxy-2,2-dimethyl2H-1-benzopyran; 6,7-Dimethoxy-2,2-dimethyl-2H-benzopyran; 6,7-Dimethoxy-2,2-dimethylchromene; 6,7-Dimethoxy-2,2-dimethyl-2H-chromene; PRICOCENE II; Ageratochromene; Precocen 2; 6,7-dimethoxy-2,2-dimethylchrom-3-ene; Precocene 2

物化性质

• 密度: 1.1±0.1 g/cm3
• 沸点: 300.4±42.0 °C at 760 mmHg
• 熔点: 47.5ºC
• 分子式: C₁₃H₁₆O₃
• 分子量: 220.26
• 闪点: 100.0±25.2 °C
• 精确质量: 220.109940
• PSA: 27.69000
• LogP: 3.38
• 外观性状: 油状物体
• 蒸汽压: 0.0±0.6 mmHg at 25°C
• 折射率: 1.514
• 储存条件:

  密封储存，储存于阴凉、干燥的库房。

• 稳定性:

  常温常压下稳定，避免与强氧化剂接触。

• 计算化学:

  1.疏水参数计算参考值（XlogP）:无

  2.氢键供体数量:0

  3.氢键受体数量:3

  4.可旋转化学键数量:2

  5.互变异构体数量:无

  6.拓扑分子极性表面积27.7

  7.重原子数量:16

  8.表面电荷:0

  9.复杂度:272

  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: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

• 更多:

  1. 性状：粉末

  2. 密度（g/mL,25℃）：未确定

  3. 相对蒸汽密度（g/mL,空气=1）：未确定

  4. 熔点（ºC）：47.5

  5. 沸点（ºC,常压）：未确定

  6. 沸点（ºC，2mmHg）：未确定

  7. 折射率(n20/D)：未确定

  8. 闪点（ºC）：113

  9. 比旋光度（º）：未确定

  10. 自燃点或引燃温度（ºC）：未确定

  11. 蒸气压（mmHg,20ºC）：未确定

  12. 饱和蒸气压（kPa,25ºC）：未确定

  13. 燃烧热（KJ/mol）：未确定

  14. 临界温度（ºC）：未确定

  15. 临界压力（KPa）：未确定

  16. 油水（辛醇/水）分配系数的对数值：未确定

  17. 爆炸上限（%,V/V）：未确定

  18. 爆炸下限（%,V/V）：未确定

  19. 溶解性：未确定

生物活性

• 描述: 早新世II是抗虫保幼激素[1]。
• 相关类别:
  研究领域 >> 其他
  信号通路 >> 其他 >> 其他
• 参考文献:

  [1]. Ohta T, et al. Radiosynthesis and metabolism of the insect antijuvenile hormone, precocene II. J Agric Food Chem. 1977;25(3):478-481.

MSDS

Name: Precocene II 99% Material Safety Data Sheet Synonym: 6,7-Dimethoxy-2,2-Dimethyl-3-Chromene; Ageratochromene CAS: 644-06-4 Section 1 - Chemical Product MSDS Name:Precocene II 99% Material Safety Data Sheet Synonym:6,7-Dimethoxy-2,2-Dimethyl-3-Chromene; Ageratochromene Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS CAS# Chemical Name content EINECS# 644-06-4 Precocene II 99% 211-408-5 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. 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. 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. Runoff from fire control or dilution water may cause pollution. 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: Keep container closed when not in use. 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# 644-06-4: 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 minimize contact with skin. 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: Crystals Color: slightly yellow Odor: Not available. pH: Not available. Vapor Pressure: Not available. Viscosity: Not available. Boiling Point: Not available. Freezing/Melting Point: 46.00 - 47.00 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: C13H16O3 Molecular Weight: 220.27 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: Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide. Hazardous Polymerization: Has not been reported Section 11 - TOXICOLOGICAL INFORMATION RTECS#: CAS# 644-06-4: DJ2527000 LD50/LC50: Not available. Carcinogenicity: Precocene II - Not listed by ACGIH, IARC, or NTP. Other: See actual entry in RTECS for complete information. 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. WGK (Water Danger/Protection) CAS# 644-06-4: No information available. Canada CAS# 644-06-4 is listed on Canada's NDSL List. CAS# 644-06-4 is not listed on Canada's Ingredient Disclosure List. US FEDERAL TSCA CAS# 644-06-4 is listed on the TSCA inventory. SECTION 16 - ADDITIONAL INFORMATION N/A

毒性和生态

毒理学数据: 1、其他多剂量毒性：大鼠经腹腔TDLo：500mg/kg/5D-I； 2、慢性毒性/致癌性 小鼠经腹腔TDLo：27536μg/kg； 3、 致突变性 果蝇经口：5mg /L； 大鼠肝DNA损害：25μmol /L； 大鼠肝DNA合成：1μmol /L； CHEMICAL IDENTIFICATION RTECS NUMBER : DJ2527000 CHEMICAL NAME : 2H-1-Benzopyran, 6,7-dimethoxy-2,2-dimethyl- CAS REGISTRY NUMBER : 644-06-4 BEILSTEIN REFERENCE NO. : 0160683 LAST UPDATED : 199701 DATA ITEMS CITED : 6 MOLECULAR FORMULA : C13-H16-O3 MOLECULAR WEIGHT : 220.29 HEALTH HAZARD DATA ACUTE TOXICITY DATA TYPE OF TEST : TDLo - Lowest published toxic dose ROUTE OF EXPOSURE : Intraperitoneal SPECIES OBSERVED : Rodent - rat DOSE/DURATION : 500 mg/kg/5D-I TOXIC EFFECTS : Kidney, Ureter, Bladder - changes primarily in glomeruli Kidney, Ureter, Bladder - changes in tubules (including acute renal failure, acute tubular necrosis) Kidney, Ureter, Bladder - hematuria TYPE OF TEST : TDLo - Lowest published toxic dose ROUTE OF EXPOSURE : Intraperitoneal SPECIES OBSERVED : Rodent - mouse DOSE/DURATION : 27536 ug/kg TOXIC EFFECTS : Tumorigenic - Carcinogenic by RTECS criteria Liver - tumors TYPE OF TEST : Specific locus test MUTATION DATA TYPE OF TEST : Unscheduled DNA synthesis TEST SYSTEM : Rodent - rat Liver DOSE/DURATION : 1 umol/L REFERENCE : CALEDQ Cancer Letters (Shannon, Ireland). (Elsevier Scientific Pub. Ireland Ltd., POB 85, Limerick, Ireland) V.1- 1975- Volume(issue)/page/year: 26,311,1985

安全

• 危害码 (欧洲): Xi
• 安全声明 (欧洲): S24/25
• RTECS号: DJ2527000
• 海关编码: 2909199090

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海关

海关编码	2909199090
中文概述	2909199090. 其他无环醚及其卤化衍生物（包括磺化，硝化或亚硝化衍生物）. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:5.5%. 普通关税:30.0%
申报要素	品名, 成分含量, 用途
Summary	2909199090. other acyclic ethers and their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0%