CAS No. 66251-97-6 3-Butenal, 4-isocyano- 3-Butenal, 4-isocyano- Catalog No.: 590371 Name: 3-Butenal, 4-isocyano- CAS: 66251-97-6 Formula: C5H5NO Filed under: Cyanato, Cyano Inquire about this product → | Safety data