CAS 663618-36-8 appears in our catalog under these names: Sodium 5-methyl-2-phenyl-2,3-dihydro-1H-pyrazol-3-yl sulfate, 98%, Norantipyrine Sulfate Sodium Salt (>90%). Offered by: Chemat Brand, TRC. Available pack sizes: on request, 100mg, 10mg, 25mg.