
Impurity profiling of carbocisteine by HPLC-CAD, qNMR and UV/vis spectroscopy
Keywords: CAD, corona charged aerosol detector; COPD, chronic obstructive lung disease; Ph. Eur., European Pharmacopoeia; AAs, amino acids; OPA, ortho-phthalaldehyde; FMOC, fluorenylmethyloxycarbonyl chloride; DABS-Cl, dimethylaminoazobenzene-4-sulfonyl chloride; P