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. 2020 Dec 8;2:100064. doi: 10.1016/j.ijpx.2020.100064

Fig. 2.

Fig. 2

Score plots of the PCA of the un-transformed (a) and the second derivative transformed (b) ATR-FTIR spectra of the ASDs, the matrix/carrier (SOL) and the amorphous and crystalline form I RIV.