199738-85-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 199738-85-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,7,3 and 8 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 199738-85:
(8*1)+(7*9)+(6*9)+(5*7)+(4*3)+(3*8)+(2*8)+(1*5)=217
217 % 10 = 7
So 199738-85-7 is a valid CAS Registry Number.