37839-21-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 37839-21-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,7,8,3 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 37839-21:
(7*3)+(6*7)+(5*8)+(4*3)+(3*9)+(2*2)+(1*1)=147
147 % 10 = 7
So 37839-21-7 is a valid CAS Registry Number.