1211535-31-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1211535-31-7 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, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1211535-31:
(9*1)+(8*2)+(7*1)+(6*1)+(5*5)+(4*3)+(3*5)+(2*3)+(1*1)=97
97 % 10 = 7
So 1211535-31-7 is a valid CAS Registry Number.