637731-14-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 637731-14-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,7,7,3 and 1 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 637731-14:
(8*6)+(7*3)+(6*7)+(5*7)+(4*3)+(3*1)+(2*1)+(1*4)=167
167 % 10 = 7
So 637731-14-7 is a valid CAS Registry Number.