2-Pyrazineethanethiol 2-Pyrazinylethanethiol 2-Pyrazinylethylmercaptan 35250-53-4 5-23-11-00173 (Beilstein Handbook Reference) BRN 0774932 Ethanethiol, 2-pyrazinyl- FEMA 3230 FEMA No. 3230 Pyrazineethanethiol Pyrazinyl ethanethiol