4-((3,8-Dimethyl-5-(1-methylethyl)-1-azulenyl)amino)-4-oxobutanoic acid 69174-75-0 BRN 2155660 Butanoic acid, 4-((3,8-dimethyl-5-(1-methylethyl)-1-azulenyl)amino)-4-oxo- Succinic acid mono-3-guaiazulenamide