Syonyms Name: 15630:2; C.I. Pigment Red 49 Ca salt; C.I. Pigment Red 49, Calcium Toner; C.I. Pigment Red 49, calcium salt (2:1); C.I. Pigment Red 49:2; C.I. Pigment Red 49, calcium salt (2:1) (8CI); Calcium Lithol Red; -; 2-[(2Z)-2-(2-oxonaphthalen-1(2H)-ylidene)hydraz