764-56-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 764-56-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,6 and 4 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 764-56:
(5*7)+(4*6)+(3*4)+(2*5)+(1*6)=87
87 % 10 = 7
So 764-56-7 is a valid CAS Registry Number.