213406-16-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 213406-16-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,3,4,0 and 6 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 213406-16:
(8*2)+(7*1)+(6*3)+(5*4)+(4*0)+(3*6)+(2*1)+(1*6)=87
87 % 10 = 7
So 213406-16-7 is a valid CAS Registry Number.