1211535-59-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1211535-59-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,1,5,3 and 5 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1211535-59:
(9*1)+(8*2)+(7*1)+(6*1)+(5*5)+(4*3)+(3*5)+(2*5)+(1*9)=109
109 % 10 = 9
So 1211535-59-9 is a valid CAS Registry Number.