137789-83-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137789-83-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,7,8 and 9 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 137789-83:
(8*1)+(7*3)+(6*7)+(5*7)+(4*8)+(3*9)+(2*8)+(1*3)=184
184 % 10 = 4
So 137789-83-4 is a valid CAS Registry Number.