Synonyms:(S)-6-Methoxy-alpha-methyl-2-naphthaleneacetic acid sodium salt
C.A.S NO. : 26159-34-2
Specification: 98.5% to 101.5%
Standard: EP/BP/USP
Molecular formula: C14H13NaO3
Characteristic: White to almost white crystalline powder
Solubility: Soluble in water, methanol; slightly soluble in ethanol
Melting point: 250-251℃
Boiling point: 403.9℃ at 760 mmHg
Function and Application
Naproxen sodium is anti-inflammatory drug. It is suitable for relieving all kinds of mild to moderate pain,such as tooth extraction and other post-operative pain, primary dysmenorrhea and headache. Naproxen sodium can also be used to treat rheumatoid arthritis, osteoarthritis, ankylosing spondylitis, Juvenilearthritis, tendinitis, bursitis and acute gouty arthritis. Naproxen sodium can relieve symptoms of swelling and limited activity in arthritis.
Specification
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Item
Specifications
Results
Appearance
White to almost white
crystalline powder
Almost white crystalline
Identification
A. Infrared absorption
The infrared absorption
spectrum is concordant
with the reference spectrum
Conform
B. Ultraviolet Absorption
Absorptivities at 272nm,
calculated on the dried
base, do not differ by
more than 3%
<1%
Specific rotation
-17.0°to -15.3°
-16.7°
Loss on drying
≤1.0%
0.2%
Heavy metals
≤0.002%
<0.002%
Free Naproxen
≤1.0%
0.1%
Related substances
(HPLC)
Impurity D(in-house)
≤0.10%
<0.01%
Impurity E(in-house, Impurity C in EP)
≤0.10%
<0.01%
Any other impurity
≤0.10%
<0.01%
Total impurities
≤0.5%
<0.01%
Residual Solvents
Toluene
≤50ppm
<1ppm
Methanol
≤50ppm
<12ppm
Ethanol
≤100ppm
<8ppm
[Assay]
(On the dried basis)
It contains C14H13NaO3
98.5% to 101.5%
99.7%
Conclusion
The results conforms with USP35 standards
Packing
1kg with double plastic container inside/Aluminum foil bag ; 25kg with double plastic container inside/Fiber drum outside.Or as your request.
Hebei yanxi chemical co., ltd is a professional research and development of the production of lead acetate, 2-phenylethylamide enterprises.under the innovation in traditional production equipment and technology, the use of "high temperature cooling" and "plastic basin crystallization" technology, on the basis of reducing the cost of products to make the quality of products to the same industry. Under the close supervision of the quality inspection department of the company, we carry out production and sales in the way of "labeling", providing the most convenient and fastest service for users all over the world.
Hebei Yanxi Chemical Co. LTD., mainly produce the Carbomer940/980/u21 and lead acetate and lead oxide, lead stearate, lead salt, at the same time operating organic intermediates, surfactants, Food additive,inorganic salt, plant extracts, cosmetics raw material, etc., through long-term development, hebei said bush chemical co., LTD. In hebei province has become a collection of r &d, production, sales in the integration of high-tech enterprises.
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