637767-83-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 637767-83-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,7,7,6 and 7 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 637767-83:
(8*6)+(7*3)+(6*7)+(5*7)+(4*6)+(3*7)+(2*8)+(1*3)=210
210 % 10 = 0
So 637767-83-0 is a valid CAS Registry Number.