1297137-34-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1297137-34-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,9,7,1,3 and 7 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1297137-34:
(9*1)+(8*2)+(7*9)+(6*7)+(5*1)+(4*3)+(3*7)+(2*3)+(1*4)=178
178 % 10 = 8
So 1297137-34-8 is a valid CAS Registry Number.