1-(3-Ethylpyrazinyl)ethan-1-one 1-(3-Ethylpyrazinyl)ethanone 2-Acetyl-3-ethyl-1,4-diazine 2-Acetyl-3-ethylpyrazine 32974-92-8 EINECS 251-316-2 Ethanone, 1-(3-ethylpyrazinyl)- FEMA No. 3250