156178-23-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 156178-23-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,1,7 and 8 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 156178-23:
(8*1)+(7*5)+(6*6)+(5*1)+(4*7)+(3*8)+(2*2)+(1*3)=143
143 % 10 = 3
So 156178-23-3 is a valid CAS Registry Number.