7137-27-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7137-27-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,1,3 and 7 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 7137-27:
(6*7)+(5*1)+(4*3)+(3*7)+(2*2)+(1*7)=91
91 % 10 = 1
So 7137-27-1 is a valid CAS Registry Number.