116956-81-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 116956-81-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,6,9,5 and 6 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 116956-81:
(8*1)+(7*1)+(6*6)+(5*9)+(4*5)+(3*6)+(2*8)+(1*1)=151
151 % 10 = 1
So 116956-81-1 is a valid CAS Registry Number.