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 Red2-[(2Z)-2-(2-oxonaphthalen-1(2H)-ylidene)hydrazino]naphthalene-1-sulfonic acid; calcium bis{2-[(2Z)-2-(2-oxonaphthalen-1(2H)-ylidene)hydrazinyl]naphthalene-1-sulfonate}; calcium 2-[(2-hydroxy-1-naphthyl)azo]naphthalene-1-sulfonate