157311-33-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157311-33-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,3,1 and 1 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 157311-33:
(8*1)+(7*5)+(6*7)+(5*3)+(4*1)+(3*1)+(2*3)+(1*3)=116
116 % 10 = 6
So 157311-33-6 is a valid CAS Registry Number.