Esomeprazole sodium CAS :161796-78-7

Esomeprazole sodium
Product Name:Esomeprazole sodium
Another Name:1H-Benzimidazole,6-methoxy-2-[(S)-[(4-methoxy-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-, sodiumsalt (1:1)
CAS Number:161796-78-7
Molecular Weight:369.41
Molecular Formula:C17H20N3NaO3S
Formula:C17H20N3NaO3S
Molecular Weight:369.41
Synonyms:(S)-(-)-omeprazole Sodium;1H-Benzimidazole,5-methoxy-2-[(S)-[(4-methoxy-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-, sodiumsalt (9CI);5-Methoxy-2-((S)-((4-methoxy-3,5-dimethyl-2-pyridyl)methyl)sulfinyl-1H-benzimidazole sodium salt;S-Omeprazole sodium;
Boiling Point:618.9 °C at 760 mmHg
Flash Point:328.1 °C

Items of analysis Specification
Appearance White to almost white powder 
Identification
IR: should be consistent with
the reference spectra
Combustioning in the colorless f
lame, the flame was bright yellow
 PH 10.3-11.3 
Absorbance at 440nm ≤ 0.05 
Absorbance at 650nm ≤ 0.05
Water Content ≤2.0%
Related impurities
Impurity A ≤0.1% 
Impurity B ≤0.1%
Impurity C ≤0.2% 
Any other imputity ≤0.1%
Total impurities ≤0.5% 
Solvent Residue
Acetone ≤0.5% 
Methanol ≤0.3% 
Isopropyl alcohol ≤0.5% 
Heavy metal ≤ 20ppm 
Assay ≥ 98.0%