7. SEM ANALYSIS ( MORPHOLOGICAL CHANGE DURING ANHYDRATE MONOHYDRATE ) (Anhydrate theophylline) (Monohydrate theophylline)
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9. FIGURE 1. DISSOLUTION PROFILES OF UNPROCESSED AND PROCESSED ANHYDROUS THEOPHYLLINE SAMPLES: STEP 1 ( ● ), STEP 2 ( ♦ ), AND STEP 3 ( ■ ). THESE ARE DESCRIBED IN SCHEME 1. ( REF :DEBNATH S, SURYANARAYANAN R. INFLUENCE OF PROCESSING-INDUCED PHASE TRANSFORMATIONS ON THE DISSOLUTION OF THEOPHYLLINE TABLETS. AAPS PHARMSCITECH. 2004; 5(1) Step 1 Step 2 Step 3
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17. Comparision of NIR and Raman spectra AT has distinct peaks at 1664 and 1707 cm -1 and MT has a distinct peak at 1686 cm -1 , NIR spectra of AT and MT from 1100 to 1850 nm.