1,4,7,10-Tetraoxa-13-azacyclopentadecane, 13-(bis(1-aziridinyl)phosphinyl)- 101347-44-8 13-(Bis(1-aziridinyl)phosphinyl)-1,4,7,10-tetraoxa-13-azacyclopentadecane Azacrown-tepa BRN 5987689