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CERTIFICATE OF ANALYSIS Reference Substance Date Paliperidone keto impurity Batch No.: IUPAC Name: 3-(2-(4-(6-fluorobenzo[d]isoxazol-3-yl)piperidin-1-yl)ethyl)-7,8-dihydro-2-methyl6H-pyrido[1,2-a]pyrimidine-4,9-dione.

O N F

N

N O O N

Molecular Formula: C23H25FN4O3 Molecular Weight: 424.47

Sr.# 1 2 3 4

Test Appearance Purity by HPLC MASS NMR

Results Off White solid 99.46% Conform Conform

Data ref.

-----Chromatogram attached Report attached Report attached

Storage condition: Store at 2-8째C, Protect from direct sunlight. Shipment date: This certificate of analysis is valid for two years from date of manufacturing provided the substance is stored under suitable conditions. Date of manufacturing: Retest Date: Document data reference:

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Paliperidone keto impurity