216451-63-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 216451-63-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,6,4,5 and 1 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 216451-63:
(8*2)+(7*1)+(6*6)+(5*4)+(4*5)+(3*1)+(2*6)+(1*3)=117
117 % 10 = 7
So 216451-63-7 is a valid CAS Registry Number.