842-91-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 842-91-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,4 and 2 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 842-91:
(5*8)+(4*4)+(3*2)+(2*9)+(1*1)=81
81 % 10 = 1
So 842-91-1 is a valid CAS Registry Number.
InChI:InChI=1/C15H17ClO3/c16-8-15(9-17,10-18)11-19-14-6-5-12-3-1-2-4-13(12)7-14/h1-7,17-18H,8-11H2