1,4-Diazabicyclo[2.2.1]heptane, 1,4-diazoniabicyclo[2.2.1] heptane deriv. 1,4-Diazoniabicyclo[2.2.1]heptane, 1,4-bis(2-chloroethyl)-, phosphate (1:2) 79220-15-8 NSC331020