137854-34-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137854-34-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,8,5 and 4 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 137854-34:
(8*1)+(7*3)+(6*7)+(5*8)+(4*5)+(3*4)+(2*3)+(1*4)=153
153 % 10 = 3
So 137854-34-3 is a valid CAS Registry Number.