139764-61-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139764-61-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,7,6 and 4 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 139764-61:
(8*1)+(7*3)+(6*9)+(5*7)+(4*6)+(3*4)+(2*6)+(1*1)=167
167 % 10 = 7
So 139764-61-7 is a valid CAS Registry Number.