Chemical Name: trans-4-(6,8-dibromo-1,4-dihydroquinazolin-3(2H)-yl)cyclohexanol (as per EP)
Smiles: O[C@@H](CC1)CC[C@H]1N2CC3=CC(Br)=CC(Br)=C3NC2
Inchi: InChI=1S/C7H7Br2NO/c8-5-1-4(3-11)7(10)6(9)2-5/h1-2,11H,3,10H2
Development and validation of a stability-indicating LC method for simultaneous determination of related compounds of guaifenesin, terbutaline sulfate and ambroxol HCl in cough syrup formulation
K. Lakshmi Narasimha Rao a,b, Ch. Krishnaiah a , K. Sudheer Babu a , K. Padmaja Reddy
Journal of Saudi Chemical Society 18(5):593-600
Isolation, Identification, and Characterization of One Degradation Product in Ambroxol by HPLC-Hyphenated Techniques
Veera Raghava Raju Thummala , Mrutyunjaya Rao Ivaturi , Someswara Rao Nittala
Sci Pharm. 2014; 82: 247–263
Development and Validation of RP-HPLC Method for Simultaneous Determination of Guaifenesin Impurities in Multi Drug Combinations
By Levon A. Melikyan, Rosa S. Grigoryan & Tigran K. Davtyan
Global Journal of Medical research: B Pharma, Drug Discovery, Toxicology and Medicine Volume 14 Issue 2 Version 1.0 Year 2014