137516-83-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137516-83-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,5,1 and 6 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 137516-83:
(8*1)+(7*3)+(6*7)+(5*5)+(4*1)+(3*6)+(2*8)+(1*3)=137
137 % 10 = 7
So 137516-83-7 is a valid CAS Registry Number.