764661-28-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 764661-28-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,6,4,6,6 and 1 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 764661-28:
(8*7)+(7*6)+(6*4)+(5*6)+(4*6)+(3*1)+(2*2)+(1*8)=191
191 % 10 = 1
So 764661-28-1 is a valid CAS Registry Number.