2-Methyl-3-ethyl-5- isobutylpyrazine Molecular Formula: C11H18N2 Molecular Weight: 178.27 Assay: 98% Specifications Molecular Formula: C11H18N2 Molecular Weight: 178.27 2-Methyl-3-ethyl-(5/6)-isobutylpyrazine Synonyms: CAS.NO: not available Molecular Formula: C11H18N2 Molecular Weight: 178.27