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          Naproxen Base/Naproxen Sodium

          CAS number: 26159-34-2

          Molecular formula:

          molecular weight:

          Chemical structure:

          Details

          PRODUCT NAME NAPROXEN SODIUM
          SHELF LIFE 3 years
          ITEMS SPECIFICATIONS RESULTS
          APPEARANCE WHITE TO ALMOST WHITE CRYSTALLINE POWDER WHITE CRYSTALLINE POWDER
          IDENTIFICATION

          A.INFRARED ABSORPTION THE INFRARED ABSORPTION SPETRUM IS CONCORDANT WITH THE REFERENCE SPECTRUM COMPLIES
          B. ULTRAVIOLET ABSORPTION ABSORPTIVITIES AT 2725NM,CALCULATED ON THE DRIED BASE, DO NOT DIFFER BY MORE THAN 3% 1%
          SPECIFIC  ROTATION -17° -- -15.3° -16.8°
          LOSS ON DRYING ≤1.0% 0.1%
          HEAVY METALS ≤0.002% <0.002%< td="">
          FREE NAPROXEN ≤1.0% 0.1%
          RELATED SUBSTANCES(HPLC)

          IMPURITY D(IN-HOUSE) ≤ 0.1% <0.01%< td="">
          IMPURITY E (IN-HOUSE,IMPUROTI C ON EP) ≤ 0.1% <0.01%< td="">
          ANY OTHER IMPURITY ≤ 0.1% <0.01%< td="">
          TOTAL IMPURITIES ≤ 0.5% <0.01%< td="">
          RESIDUAL SOLVENTS

          TOLUENE ≤50PPM <1ppm< td="">
          METHANOL ≤50PPM <4ppm< td="">
          ASSAY (ON DRIED BASIS)  IT CONTAINS C14H13NAO3 98.5%-101.5% 99.3%
          CONCLUSION COMPLIES WITH USP38 STANDARD