1117816-33-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1117816-33-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,1,7,8,1 and 6 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1117816-33:
(9*1)+(8*1)+(7*1)+(6*7)+(5*8)+(4*1)+(3*6)+(2*3)+(1*3)=137
137 % 10 = 7
So 1117816-33-7 is a valid CAS Registry Number.