CAS 3156-58-9 appears in our catalog under these names: 1-Methyl-4-[(E)-2-nitroethenyl]pyrazole, 96%, 1-Methyl-4-(2-nitrovinyl)-1H-pyrazole, 98%, 1–Methyl–4–(2–nitrovinyl)–1H–pyrazole, 1-Methyl-4-(2-nitrovinyl)-1H-pyrazole, 95%, 95%, 1-METHYL-4-[(E)-2-NITROETHENYL]-1H-PYRAZOLE, 97%. Offered by: Combi-blocks, AmBeed, GLPBio, Chemat, Fluorochem. Available pack sizes: 10g, 5g, 1g, 25g, 100mg, 250mg.