161959-27-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 161959-27-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,9,5 and 9 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 161959-27:
(8*1)+(7*6)+(6*1)+(5*9)+(4*5)+(3*9)+(2*2)+(1*7)=159
159 % 10 = 9
So 161959-27-9 is a valid CAS Registry Number.
InChI:InChI=1/C6H5NO5/c8-4-2-6(10)5(9)1-3(4)7(11)12/h1-2,8-10H