138649-15-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138649-15-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,6,4 and 9 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 138649-15:
(8*1)+(7*3)+(6*8)+(5*6)+(4*4)+(3*9)+(2*1)+(1*5)=157
157 % 10 = 7
So 138649-15-7 is a valid CAS Registry Number.