3-Bromo Phthalide
3-Bromophthalide
CAS: 6940-49-4
Molecular Formula: C8H5BrO2
3-Bromo Phthalide - Names and Identifiers
| Name | 3-Bromophthalide |
| Synonyms | BROMOPHTHALIDE 3-Bromophtalide 3-BROMOPHTHALIDE 3-Bromophthalide 3-Bromo Phthalide 3-bromo-1(3h)-isobenzofuranon 3-BROMO-1(3H)-ISOBENZOFURANONE 3-bromo-2-benzofuran-1(3H)-one 1(3H)-Isobenzofuranone, 3-bromo- |
| CAS | 6940-49-4 |
| EINECS | 230-084-6 |
| InChI | InChI=1/C8H5BrO2/c9-7-5-3-1-2-4-6(5)8(10)11-7/h1-4,7H |
| InChIKey | CLMSHAWYULIVFQ-UHFFFAOYSA-N |
3-Bromo Phthalide - Physico-chemical Properties
| Molecular Formula | C8H5BrO2 |
| Molar Mass | 213.03 |
| Density | 1.768±0.06 g/cm3(Predicted) |
| Melting Point | 86°C |
| Boling Point | 138 °C / 3mmHg |
| Flash Point | 139.4°C |
| Vapor Presure | 0.000751mmHg at 25°C |
| Storage Condition | under inert gas (nitrogen or Argon) at 2–8 °C |
| Refractive Index | 1.639 |
| MDL | B152853 |
| Physical and Chemical Properties | Light yellow solid. Melting point 80-83 ℃. |
| Use | Mainly used in pharmaceutical intermediates |
3-Bromo Phthalide - Risk and Safety
| Risk Codes | R38 - Irritating to the skin R41 - Risk of serious damage to eyes |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. |
3-Bromo Phthalide - Reference Information
| use | 3-bromophthalide is the main intermediate for the synthesis of taniloflurane, phthalampicillin and other drugs. Its further hydrolysis can produce adjacent benzaldehyde cases, which is an important intermediate for the synthesis of antipyretic and analgesic drugs. mainly used for pharmaceutical intermediates |
| synthesis method | at present, the main synthesis methods of 3-bromophthalide are: method 1, using phthalide as raw material and directly brominating with bromine, the product content is greater than 98.5% and the yield is greater than 80%. The disadvantage of this method is that the price of phthalide is high and the economic benefit is not good. Method 2: Using phthalide as raw material, NBS bromination was used to prepare the product with the content greater than 98% and the yield greater than 75%. The disadvantage of this method is that NBS needs to be prepared, and the production cost is higher than that of method 1. Method 3: The product was prepared by bromination of phosphorus tribromide with 3-chlorophthalide as raw material. The content was greater than 98% and the yield was greater than 84%. The disadvantage of this method is that 3-chlorophthalein is not easy to purchase, and the use of phosphorus tribromide has many problems in safety and environmental protection, and is not suitable for industrial production. Method 4: Using o-methylbenzoic acid as raw material, brominated with bromine to obtain the product, the content is greater than 98.5%, and the yield is greater than 78%. |
| chemical properties | light yellow solid. Melting point 80-83 ℃. |
| EPA chemical information | information provided by: ofmpub.epa.gov (external link) |
Last Update：2024-04-10 22:29:15
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Email: 2853786052@qq.com
Mobile: 86+15671228036
QQ: 2853786052
Wechat: 15671228036
Spot supply
Product Name: 3-Bromophthalide Visit Supplier Webpage Request for quotationCAS: 6940-49-4
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
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