2177-26-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2177-26-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,7 and 7 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 2177-26:
(6*2)+(5*1)+(4*7)+(3*7)+(2*2)+(1*6)=76
76 % 10 = 6
So 2177-26-6 is a valid CAS Registry Number.