211859-87-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 211859-87-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,1,8,5 and 9 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 211859-87:
(8*2)+(7*1)+(6*1)+(5*8)+(4*5)+(3*9)+(2*8)+(1*7)=139
139 % 10 = 9
So 211859-87-9 is a valid CAS Registry Number.