1-BUTANOL, 4-(N-(3-HYDROXYPROPYL)-N-NITROSOAMINO)- 4-(N-(3-Hydroxypropyl)-N-nitrosoamino)-1-butanol 4-Hydroxybutyl-(3-hydroxypropyl)-N-nitrosamine 62018-90-0 BRN 2082848 N-(3-Hydroxypropyl)-N-(4-hydroxybutyl)nitrosamine