335221-77-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 335221-77-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,5,2,2 and 1 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 335221-77:
(8*3)+(7*3)+(6*5)+(5*2)+(4*2)+(3*1)+(2*7)+(1*7)=117
117 % 10 = 7
So 335221-77-7 is a valid CAS Registry Number.