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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% |
Naproxen baseCAS号:22204-53-1
Naproxen base分子式: C14H14O3
Naproxen base中文名称:萘普生
Naproxen base中文同义词:DL萘普生;DL-萘普生;甲氧萘丙酸;萘普生混旋体;消痛灵;消炎宁;(+)-2-甲基-6-甲氧基-2-萘乙酸;萘普生
Naproxen base英文名称: Naproxen
Naproxen base英文同义词: ()-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
Naproxen baseEINECS号: 244-838-7
Naproxen base分子量: 230.26
Naproxen base熔点: 152-154 °C(lit.)