Product Catalog Comprehensive Product Range: Halogenides, Aromatics and Heterocycles, Colorants, Aliphatics, Catalysts and Reagents and much more. Back to Catalog (4-Carboxybutyl)-triphenylphosphonium bromide CAS-Number: 17814-85-6 We look forward to your inquiry. Challenge us! Phone: +49-(0)2241-25569-0 Send mail