Table 4 | The correlation coefficients in the range..

Preprocessing Method	Crystallinity of ceftriaxone sodium
Preprocessing Method	100%	60%	30%	amorphous
Unpreprocessed	1.00	0.96	0.92	0.87
VN	1.00	0.96	0.92	0.87
FD	1.00	0.97	0.84	0.53
FD＋VN	1.00	0.97	0.84	0.53
SD	1.00	0.99	0.94	0.34
SD＋VN	1.00	0.99	0.94	0.34

Table 4: The correlation coefficients in the range of 6500cm^-1～5500cm^-1 between the preprocessed spectra with different crystallinity and the spectrum of 100% crystallinity.

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