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; Sodium gualenate