1172991-33-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1172991-33-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,2,9,9 and 1 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1172991-33:
(9*1)+(8*1)+(7*7)+(6*2)+(5*9)+(4*9)+(3*1)+(2*3)+(1*3)=171
171 % 10 = 1
So 1172991-33-1 is a valid CAS Registry Number.