138770-73-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138770-73-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,7,7 and 0 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 138770-73:
(8*1)+(7*3)+(6*8)+(5*7)+(4*7)+(3*0)+(2*7)+(1*3)=157
157 % 10 = 7
So 138770-73-7 is a valid CAS Registry Number.