2,3-二氟-4-甲基苯甲酸 | 261763-37-5

• 物质功能分类: 有机原料 - 羧酸类化合物及衍生物 - 羧酸的卤化、磺化、硝化或亚硝化衍生物
• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 中文名称: 2,3-二氟-4-甲基苯甲酸
• 中文别名: 4-甲基-2,3-二氟苯甲酸
• 英文名称: 2,3-difluoro-4-methylbenzoic acid
• CAS: 261763-37-5
• 化学式: C₈H₆F₂O₂
• 分子量: 172.131
• InChiKey: ANVIYYKETYLSRV-UHFFFAOYSA-N

物化性质

• 熔点：
  199-201°C
• 沸点：
  274℃
• 密度：
  1.359
• 闪点：
  120℃
• 稳定性/保质期：

  避氧化物

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  12
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  37.3
• 氢给体数：
  1
• 氢受体数：
  4

安全信息

• 危险等级：
  IRRITANT
• 危险品标志：
  Xi
• 安全说明：
  S26,S36
• 危险类别码：
  R36/37/38
• 海关编码：
  2916399090
• 危险性防范说明：
  P261,P305+P351+P338
• 危险性描述：
  H315,H319,H335

SDS

Material Safety Data Sheet

---

Section 1. Identification of the substance
Product Name: 2,3-Difluoro-4-methylbenzoic acid
Synonyms:

---

Section 2. Hazards identification
Harmful by inhalation, in contact with skin, and if swallowed.
H315: Causes skin irritation
H319: Causes serious eye irritation
H335: May cause respiratory irritation
P261: Avoid breathing dust/fume/gas/mist/vapours/spray
P280: Wear protective gloves/protective clothing/eye protection/face protection
P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present
and easy to do – continue rinsing
P304+P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
P405: Store locked up

---

Section 3. Composition/information on ingredients.
Ingredient name: 2,3-Difluoro-4-methylbenzoic acid
CAS number: 261763-37-5

---

Section 4. 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.

---

Section 5. 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.

---

Section 6. 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.

---

Section 7. 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.
Storage: Store in closed vessels.

---

Section 8. 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.

---

Section 9. Physical and chemical properties
Appearance: Not specified
Boiling point: No data
Melting point: No data
Flash point: No data
Density: No data
Molecular formula: C8H6F2O2
Molecular weight: 172.1

---

Section 10. Stability and reactivity
Conditions to avoid: Heat, flames and sparks.
Materials to avoid: Oxidizing agents.
Possible hazardous combustion products: Carbon monoxide, hydrogen fluoride.

---

Section 11. Toxicological information
No data.

---

Section 12. Ecological information
No data.

---

Section 13. 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.

---

Section 14. Transportation information
Non-harzardous for air and ground transportation.

---

Section 15. 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

制备方法与用途

应用的2,3-二氟-4-甲基苯甲酸是一种医药中间体，有文献报道它可作为起始物料用于制备胆碱能毒蕈碱M1受体的调节剂，具体是合成2,3-二氢-4H-1,3-苯并恶嗪-4-酮衍生物。

反应信息

• 作为反应物：
  描述：

  2,3-二氟-4-甲基苯甲酸 在 N-溴代丁二酰亚胺(NBS) 、 偶氮二异丁腈 作用下， 以 四氯化碳 为溶剂， 反应 3.0h， 以25.2%的产率得到4-(bromomethyl)-2,3-difluorobenzoic acid
  参考文献：
  名称：

  Xof luza含硫杂环化合物、其中间体及制备方法

  摘要：

  本发明公开了Xofluza含硫杂环化合物、其中间体及制备方法。本发明还提供了一种如式5所示化合物的制备方法。该制备方法反应条件温和，能耗和成本低，反应釜的利用率较高，原料异味少且来源广泛，适合工业化生产。

  公开号：

  CN110872247A

文献信息

• [EN] DUAL-ACTING ANTIHYPERTENSIVE AGENTS<br/>[FR] AGENTS ANTIHYPERTENSIFS À DOUBLE ACTION
  申请人：THERAVANCE INC

  公开号：WO2009035543A1

  公开（公告）日：2009-03-19

  The invention relates to compounds having the formula: (I) wherein: Ar, r, R3, Z, X, and R5-7 are as defined in the specification, or a pharmaceutically acceptable salt thereof. These compounds have AT1 receptor antagonist activity and neprilysin inhibition activity. The invention also relates to pharmaceutical compositions comprising such compounds; methods of using such compounds; and process and intermediates for preparing such compounds.

  本发明涉及具有以下公式的化合物：(I) 其中：Ar、r、R3、Z、X和R5-7按说明书定义，或其药用可接受盐。这些化合物具有AT1受体拮抗活性和中性内肽酶抑制活性。本发明还涉及包含这些化合物的药物组合物；使用这些化合物的方法；以及制备这些化合物的过程和中间体。
• [EN] MODULATORS OF THE G PROTEIN-COUPLED MAS RECEPTOR AND THE TREATMENT OF DISORDERS RELATED THERETO<br/>[FR] MODULATEURS POUR LE RÉCEPTEUR MAS COUPLÉ À LA PROTÉINE G ET TRAITEMENT DES TROUBLES QUI Y SONT APPARENTÉS
  申请人：ARENA PHARM INC

  公开号：WO2013070657A1

  公开（公告）日：2013-05-16

  The present invention relates to compounds of Formula (I) and pharmaceutically acceptable salts, solvates, and hydrates thereof that are useful in methods of treatment and alleviation of diseases and disorders of the heart, brain, kidney, immune, and reproductive system resulting from ischemia, or reperfusion subsequent to ischemia, and any downstream complication(s) related thereto. The present invention further relates to methods of treatment and alleviation of diseases and disorders of the vasculature resulting from vasoconstriction or hypertension and any downstream complication(s) resulting from elevated blood pressure and/or reduced tissue perfusion.

  本发明涉及式（I）化合物及其药用可接受的盐、溶剂和水合物，这些化合物在治疗和缓解由缺血引起的心脏、脑、肾脏、免疫系统和生殖系统的疾病和紊乱方面具有用处，或者在缺血后再灌注引起的疾病和障碍，以及与之相关的任何下游并发症。本发明还涉及治疗和缓解由血管收缩或高血压引起的血管疾病和障碍的方法，以及由高血压和/或组织灌注减少引起的任何下游并发症。
• Discovery of LOU064 (Remibrutinib), a Potent and Highly Selective Covalent Inhibitor of Bruton’s Tyrosine Kinase
  作者：Daniela Angst、François Gessier、Philipp Janser、Anna Vulpetti、Rudolf Wälchli、Christian Beerli、Amanda Littlewood-Evans、Janet Dawson、Barbara Nuesslein-Hildesheim、Grazyna Wieczorek、Sascha Gutmann、Clemens Scheufler、Alexandra Hinniger、Alfred Zimmerlin、Enrico G. Funhoff、Robert Pulz、Bruno Cenni

  DOI：10.1021/acs.jmedchem.9b01916

  日期：2020.5.28

  Bruton's tyrosine kinase (BTK), a cytoplasmic tyrosine kinase, plays a central role in immunity and is considered an attractive target for treating autoimmune diseases. The use of currently marketed covalent BTK inhibitors is limited to oncology indications based on their suboptimal kinase selectivity. We describe the discovery and preclinical profile of LOU064 (remibrutinib, 25), a potent, highly

  Bruton的酪氨酸激酶（BTK）是一种细胞质酪氨酸激酶，在免疫中起着核心作用，被认为是治疗自身免疫性疾病的诱人靶标。基于其次优激酶选择性，目前市售的共价BTK抑制剂的使用仅限于肿瘤适应症。我们描述了一种有效的，高度选择性的共价BTK抑制剂LOU064（remibrutinib，25）的发现和临床前概况。LOU064由于与BTK的非活性构象结合而表现出出色的激酶选择性，并且具有治疗自身免疫性疾病的同类最佳共价BTK抑制剂的潜力。它在大鼠胶原蛋白诱发的关节炎中表现出有效的体内靶标占有率，EC90为1.6 mg / kg，且剂量依赖性。
• [EN] NOVEL BEXAROTENE ANALOGS<br/>[FR] ANALOGUES INÉDITS DU BEXAROTÈNE
  申请人：UNIV ARIZONA

  公开号：WO2011103321A1

  公开（公告）日：2011-08-25

  The present invention relates to analogs of bexarotene and methods of use thereof.

  本发明涉及贝沙罗汀的类似物及其使用方法。
• Dual-acting benzoimidazole antihypertensive agents
  申请人：Allegretti Paul

  公开号：US20080318951A1

  公开（公告）日：2008-12-25

  The invention is directed to compounds having the formula: wherein: Ar, r, n, X, R 2-3 and R 5-7 are as defined in the specification, and pharmaceutically acceptable salts thereof. These compounds have AT 1 receptor antagonist activity and neprilysin inhibition activity. The invention is also directed to pharmaceutical compositions comprising such compounds; methods of using such compounds; and process and intermediates for preparing such compounds.

  这项发明涉及具有以下结构的化合物： 其中：Ar、r、n、X、R 2-3 和R 5-7 如规范中所定义，并且其药学上可接受的盐。这些化合物具有AT 1 受体拮抗活性和神经肽酶抑制活性。该发明还涉及包含这些化合物的药物组合物；使用这些化合物的方法；以及制备这些化合物的过程和中间体。