Synonyms: strontium 4-[(4-chloro-5-methyl-2-sulphonatophenyl)azo]-3-hydroxy-2-naphthoate (1:1);2-Naphthalenecarboxylic acid, 4-(4-chloro-5-methyl-2-sulfophenyl)azo-3-hydroxy-, strontium salt (1:1);2-Naphthalenecarboxylic acid, 4-[(4-chloro-5-methyl-2-sulfophenyl)azo]-3-hydroxy-, strontium salt;2-Naphthalenecarboxylic acid,4-[(4-chloro-5-methyl-2-sulfophenyl)azo]-3-hydroxy-,strontium salt;4-[(4-chloro-5-methyl-2-sulfophenyl)azo]-3-hydroxy-2-naphthalenecarboxylic aci strontium salt;C.I. 15860, strontium salt;C.I. 15860,strontium salt;C.I. Pigment Red 52, strontium salt