From: A novel stability-indicating method for known and unknown impurities profiling for diltiazem hydrochloride pharmaceutical dosage form (tablets)
Compound
LOQ
LOD
RF
µg mL−1
%w/wa
EP impurity-F
0.18
0.015
0.06
0.005
0.82
Diltiazem hydrochloride
0.12
0.01
0.04
0.003
1.00