217816-92-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 217816-92-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,7,8,1 and 6 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 217816-92:
(8*2)+(7*1)+(6*7)+(5*8)+(4*1)+(3*6)+(2*9)+(1*2)=147
147 % 10 = 7
So 217816-92-7 is a valid CAS Registry Number.