Naproxen Sodium

CAS No. 26159-34-2
Other Names aleve
MF C14H14NaO3
EINECS No. 247-486-2
Place of Origin Zhejiang, China (Mainland)
Type Antibiotic and Antimicrobial Agents
Grade Standard Medicine Grade

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Naproxen Sodium Details

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Item	Standard(USP31)
Appearance	White to almost white crystalline powder
Infrared absorption	The infrared absorption spectrum is concordant with the reference spectrum
Ultraviolet absorption	Absorptivities at 272nm, calculated on the dried base, do not differ by more than 3%
Specific rotation	-17.0°~ -15.3°
Loss on drying	≤1.0%
Heavy metals	≤0.002%
Free Naproxen	≤1.0%
Impurity D( in house)	≤0.10%
Impurity E( in house, Impurity C in EP)	≤0.10%
Any other impurity	≤0.10%
Total impurities	≤1.0%
Toluene	≤50ppm
Methanol	≤50ppm
Hthanol	≤100ppm
Assay( On the dried basis )	98.0%~102.0%

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