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Montelukast KSM-II Lactone Impurity

SZ CAT No SZ-M031066
CAS No 162515-66-4
Mol.F. C6H8OS
Mol.Wt. 128.2
Inv. Status Custom Synthesis


Chemical Name: 5-thiaspiro[2.4]heptan-6-one

Isolation and identification of a potential unknown impurity in montelukast drug substance resulting from photolytic degradation
Hemant Madhusudan Gandhi,*a   Nageswara Rao Gollapalli,b   Jaydeep Kumar D. Lilakar,a   Kirti Kumar Jaina  and  Sandeep Mohantya
Anal. Methods, 2016,8, 1667-1673
 
A Validated RP-HPLC Method for the Determination of Impurities in Montelukast Sodium
N. rashmitha§ , t. joseph sunder raj§ , ch. srinivas§ , n. srinivas§ , u. k. ray§ , hemant kumar sharma§* and k. mukkanti
E-Journal of Chemistry 2010, 7(2), 555-563
 
A validated stability-indicating and lc-ms compatible method for the determination of related substances and assay of montelukast sodium and levocetirizine hcl by u-hplc in tablet dosage form
Sai Kumar B 1 , Jyothi G2 and Sreenivasa Rao B
IAJPS 2018, 05 (03), 1368-1382