Syonyms Name: C.I. 24280; C.I. Direct Blue 22 (VAN); C.I. Direct Blue 22, disodium salt; C.I. Direct Blue 22 (7CI); C.I. Direct Blue 22, disodium salt (8CI); disodium 1-amino-7-[(E)-{3,3'-dimethoxy-4'-[(2E)-2-(2-oxonaphthalen-1(2H)-ylidene)hydrazinyl]biphenyl-4-yl}diaz