Synonyms: 1-Azulenesulfonicacid, 3,8-dimethyl-5-(1-methylethyl)-, sodium salt (9CI);1-Azulenesulfonicacid, 5-isopropyl-3,8-dimethyl-, sodium salt (7CI,8CI);Azulen SN;Azulene SN;Azunol ST;Azupromin;Guaiazulene 3-sulfonate sodium salt;Guaiazulene soluble;Sodium 1,4-dimethyl-7-isopropylazulene-3-sulfonate;Sodium3-methyl-5-isopropyl-8-methylazulenesulfonate;Sodium5-isopropyl-3,8-dimethyl-1-azulenesulfonate;Sodium7-isopropyl-1,4-dimethylazulene-3-sulfonate;Sodium guaiazulene-3-sulfonate;Sodium guaiazulenesulfonate;