Ethyl 3,4-dihydroxybenzoate CAS: 3943-89-3
Category：Pharmaceutical Materials
Introduction
Name: Ethyl 3,4-dihydroxybenzoate CAS: 3943-89-3 Appearance: White powder Assay: ≥99% Capacity: 100mt/year Min.package: 100gram Application: Erlotinib intermediate and food additive Standard: Enterprise export
Synonyms: Protocatechuic acid ethyl ester Molecular Formula: C9H10O4 Molecular Weight: 182.17 CAS Registry Number: 3943-89-3 EINECS: 223-529-0
Ethyl 3,4-dihydroxybenzoate, also known as ethyl 3,4-dihydroxybenzoate.
nature:
Ethyl 3,4-dihydroxybenzoate is a colorless to slightly yellow liquid with an aromatic odor. It is soluble in organic solvents such as alcohols, ethers, and ketones, and insoluble in water. This compound exhibits ester like properties and has a certain degree of stability.
Purpose:
Manufacturing method:
There are many methods for preparing 3,4-dihydroxybenzoic acid ethyl ester, and the commonly used method is through esterification reaction of hydroxybenzoic acid ethyl ester. The specific method can be obtained by reacting p-hydroxybenzoic acid with acetic anhydride under acid catalysis.
Security information:
Ethyl 3,4-dihydroxybenzoate is an organic compound, and safety precautions should be taken when using it. It may have irritating effects on the skin, eyes, and respiratory tract, and appropriate protective equipment should be worn when using it. If accidentally exposed or inhaled, please wash immediately or seek medical assistance. It should be stored in a cool, dry, well ventilated place, away from sources of fire and oxidants.
| Name | Ethyl 3,4-dihydroxybenzoate |
| Synonyms | RARECHEM AL BI 0069 ETHYL PROTOCATECHUATE Ethyl 3,4-dihydrobenzoate ETHYL 3,4-DIHYDROXYBENZOATE Ethyl 3,4-dihydroxybenzoate PROTOCATECHUIC ACID ETHYL ESTER 3,4-Dihydroxybenzoic acid ethyl ester 3,4-DIHYDROXYBENZOIC ACID ETHYL ESTER ETHYL 3,4-DIHYDROXYBENZOATE (PROTOCATECHUIC ACID ETHYL ESTER) |
| CAS | 3943-89-3 |
| EINECS | 223-529-0 |
| InChI | InChI=1/C9H10O4/c1-2-13-9(12)6-3-4-7(10)8(11)5-6/h3-5,10-11H,2H2,1H3 |
| InChIKey | KBPUBCVJHFXPOC-UHFFFAOYSA-N |
| Molecular Formula | C9H10O4 |
| Molar Mass | 182.17 |
| Density | 1.2481 (rough estimate) |
| Melting Point | 132-134°C(lit.) |
| Boling Point | 275.56°C (rough estimate) |
| Flash Point | 147°C |
| Water Solubility | Insoluble in water. Soluble in ethanol. |
| Vapor Presure | 0-9.4Pa at 20-120℃ |
| Appearance | Yellow powder |
| Color | Pale yellow to beige |
| BRN | 2097435 |
| pKa | 8.19±0.18(Predicted) |
| Storage Condition | Sealed in dry,Room Temperature |
| Refractive Index | 1.4500 (estimate) |
| MDL | MFCD00002199 |
| Physical and Chemical Properties | White or light brown yellow crystalline powder. No odor or slightly phenol odor. The taste was slightly bitter. The melting point was 132-135 °c. Insoluble in water, soluble in ethanol. |
| Use | Used as food additives, pharmaceutical intermediates, etc |
,Disclaimer: The above content is for reference and communication only among industry insiders, and does not guarantee its accuracy or completeness. According to relevant laws and regulations and the regulations of this website, units or individuals who purchase related items should obtain valid qualifications and qualification conditions.
