6761-27-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6761-27-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,7,6 and 1 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 6761-27:
(6*6)+(5*7)+(4*6)+(3*1)+(2*2)+(1*7)=109
109 % 10 = 9
So 6761-27-9 is a valid CAS Registry Number.