1156-65-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1156-65-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,1,5 and 6 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1156-65:
(6*1)+(5*1)+(4*5)+(3*6)+(2*6)+(1*5)=66
66 % 10 = 6
So 1156-65-6 is a valid CAS Registry Number.