Direct Comparison of ¹⁹F qNMR and ¹H qNMR by Characterizing Atorvastatin Calcium Content

Table 2

Content of atorvastatin calcium calculated from ¹⁹F and ¹H qNMR measurements.

Number	Atorvastatin calcium content (%)
	^19F qNMR	^1H qNMR
1	93.9	94.8
2	92.2	95.1
3	93.8	95.1
4	93.1	94.9
5	92.8	95.7
6	92.6	96.4
Mean	93.1	95.3
RSD (%)	0.73	0.62