16156-81-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16156-81-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,1,5 and 6 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 16156-81:
(7*1)+(6*6)+(5*1)+(4*5)+(3*6)+(2*8)+(1*1)=103
103 % 10 = 3
So 16156-81-3 is a valid CAS Registry Number.