CAS 290-37-9 appears in our catalog under these names: Pyrazine, Pyrazine, >95% (HPLC), Pyrazine, 99+% (dry wt.) water <1.0% , Pyrazine, 98% , Pyrazine, >98.0%(GC). Offered by: Chemat Brand, TRC, GLPBio, Thermo Scientific (Alfa Aesar), TCI. Available pack sizes: on request, 10g, 1g, 50g, 500g, 5g, 25g, 100g.