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[CAS Name] Naproxen

[Formula] C14H14O3

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[CAS Name]Naproxen
[Alias]()-2-(methoxy-2-naphthyl)-propionicacid;()-2-(methoxy-2-naphthyl)-propionsaeure;()-propionicaci;(+)-2-(Methoxy-2-naphthyl)-propionic acid;(+)-2-(methoxy-2-naphthyl)-propionicacid;(+)-2-(Methoxy-2-naphthyl)-propionsaeure;(+)-2-naphthaleneaceticaci;(+)-6-Methoxy-alpha-methyl-2-napthaleneacetic acid
[Number]22204-53-1
[EINECS]244-838-7
[Formula]C14H14O3
[Molecular weight]230.26

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Arshine Group Co.,Ltd.

High quality Naproxen base/22204-53-1
1.CAS No. 22204-53-1
2.Color:White
3.Standard:BP/USP/EP
4.packing: 25kg/drum

Usage:API

TEST		SPECIFICATION	RESULT
Characters		A white or almost white crystalline powder	Comply
Id.	A. Specific optical rotation	59° ~ 62°	60.1°
	B.Melting point	154.0~158.0°C	156.0~156.5°C
	C.Specific absorbance	Meet the requirements	Comply
	D.Infrared absorption	Meet the requirements	Comply
Appearance of solution		Clear,not more intense than BY7	Comply
Eantiomeric purity		≤2.5%	0.70%
Related substances
Impurity L		≤0.1%	<0.01%
Unspecified impurities		≤0.1%	0.02%MAX
Total impurities		≤0.3%	0.04%
Heavy metals		≤20ppm	<20ppm
Loss on drying		≤0.5%	0.01%
Sulphate ash		≤0.1%	0.01%
Assay		99.0%~101.0%	99.70%

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