216656-98-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 216656-98-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,6,6,5 and 6 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 216656-98:
(8*2)+(7*1)+(6*6)+(5*6)+(4*5)+(3*6)+(2*9)+(1*8)=153
153 % 10 = 3
So 216656-98-3 is a valid CAS Registry Number.