138842-58-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138842-58-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,8,4 and 2 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 138842-58:
(8*1)+(7*3)+(6*8)+(5*8)+(4*4)+(3*2)+(2*5)+(1*8)=157
157 % 10 = 7
So 138842-58-7 is a valid CAS Registry Number.