2-3-Dimethyl pyrazine（CAS#5910-89-4）
| Risk Codes | R10 – Flammable R22 – Harmful if swallowed R37/38 – Irritating to respiratory system and skin. R41 – Risk of serious damage to eyes |
| Safety Description | S16 – Keep away from sources of ignition. S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S39 – Wear eye / face protection. |
| UN IDs | UN 1993 3/PG 3 |
| WGK Germany | 3 |
| RTECS | UQ2625000 |
| TSCA | Yes |
| HS Code | 29339990 |
| Hazard Note | Irritant/Flammable |
| Hazard Class | 3 |
| Packing Group | III |
Introduction
2, 3-Dimethylpyrazine is an organic compound. The following is an introduction to some of its properties, uses, manufacturing methods and safety information:
Quality:
2, 3-Dimethylpyrazine is a colorless to yellow crystalline solid. It has the smell of acetone or ethers and can be dissolved in alcohols and ether solvents.
Use:
2, 3-Dimethylpyrazine is mainly used as a starting material for organic synthesis. It can be used as a catalyst for esterification, carboxylation and enolation under alkaline conditions.
Method:
2, 3-dimethylpyrazine can be prepared by SN2 substitution of ethyl iododide or ethyl bromide with 2-aminopyrazine. Reaction conditions are usually carried out in the presence of an alkaline medium, such as sodium ethoxide. After the reaction, the target product is obtained by crystallization or extraction.
Safety Information:
2, 3-Dimethylpyrazine has low toxicity under normal use conditions. As a chemical, contact with the skin, eyes, and respiratory tract may cause irritation. Routine laboratory safety protocols such as wearing protective laboratory gloves, goggles, and respiratory protective equipment should be followed when in use. In case of accidental contact or inhalation, wash or remove the affected area promptly and seek medical advice.
