137803-80-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137803-80-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,8,0 and 3 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 137803-80:
(8*1)+(7*3)+(6*7)+(5*8)+(4*0)+(3*3)+(2*8)+(1*0)=136
136 % 10 = 6
So 137803-80-6 is a valid CAS Registry Number.