4.
Name: 2-[1-[4-(2,6-dibromo-4-nitro-phenyl)diazenylphenyl]ethylamino]ethyl-trimethyl-azanium; sulfonatooxymethane
CAS: 85187-91-3



5.
Name: but-2-enedioic acid; 3-dimethylamino-9-methyl-2,4,9-triazabicyclo[4.3.0]nona-1,3,5-trien-8-one
CAS: 122113-42-2


