Determination of Residual Organic Solvents in Finasteride by Headspace Capillary Gas Chromatography
January 2007
in “
Journal of Instrumental Analysis
”
New to Finasteride? There is a guide in the encyclopedia. Read the guide → Studysummary This study found that using headspace capillary gas chromatography effectively determined the levels of residual organic solvents, including chloroform and dichloromethane, in finasteride with good separation and detection limits. Our plain-language summary of this paper — not a Tressless recommendation.
The study developed a method using headspace capillary gas chromatography to determine residual organic solvents, specifically chloroform and dichloromethane, in finasteride. The method effectively separated the solvent peaks and demonstrated excellent linearity with correlation coefficients of 0.9997 and 0.9998. The detection limits were 3.2 μg/L for chloroform and 0.094 μg/L for dichloromethane, with relative standard deviations (RSDs) of 1.33% and 0.89%, respectively. Factors such as equilibrium times, equilibrium temperature, and salting-out were also examined to optimize the method.