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169954-94-3

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169954-94-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 169954-94-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,9,9,5 and 4 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 169954-94:
(8*1)+(7*6)+(6*9)+(5*9)+(4*5)+(3*4)+(2*9)+(1*4)=203
203 % 10 = 3
So 169954-94-3 is a valid CAS Registry Number.

169954-94-3Downstream Products

169954-94-3Relevant articles and documents

METHOD FOR PREPARATION OF MONTELUKAST ACID IN IONIC LIQUID MEDIUM

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, (2011/05/08)

The present invention relates to a method for preparing Montelukast acid or its sodium salt by reacting a thiol compound with a Montelukast intermediate in the presence of a base in a medium comprising an ionic liquid compound. In accordance with the inventive method, highly pure Montelukast acid or its sodium salt, which is advantageously used as a raw material in the preparation of Montelukast, a leukotriene antagonist, can be easily prepared in a high yield.

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