950665-85-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 950665-85-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,5,0,6,6 and 5 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 950665-85:
(8*9)+(7*5)+(6*0)+(5*6)+(4*6)+(3*5)+(2*8)+(1*5)=197
197 % 10 = 7
So 950665-85-7 is a valid CAS Registry Number.
950665-85-7Relevant articles and documents
PROCESS
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Page/Page column 29-30, (2008/06/13)
A process of preparing montelukast, or a pharmaceutically acceptable salt thereof, which process comprises reacting a protected intermediate of formula (II) as defined in the specification with a cyclopropyl intermediate.