81340-58-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81340-58-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,3,4 and 0 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 81340-58:
(7*8)+(6*1)+(5*3)+(4*4)+(3*0)+(2*5)+(1*8)=111
111 % 10 = 1
So 81340-58-1 is a valid CAS Registry Number.
InChI:InChI=1/C20H11NO2/c22-21(23)18-11-10-16-14-6-2-1-5-13(14)15-7-3-4-12-8-9-17(18)20(16)19(12)15/h1-11H
81340-58-1Relevant articles and documents
Separation and Characterization of Mononitro Derivatives of Benzopyrene, Benzopyrene and Benzoperylene
Johansen, Einar,Sydnes, Leiv K.,Greibrokk, Tyge
, p. 309 - 318 (2007/10/02)
Mononitro derivatives of three polycyclic aromatic hydrocarbons with 5-6 condensed rings have been synthesized and purified to a purity of approximately 99.9 percent for measurements of mutagenic properties.Structural isomers were identified from 1H NMR, MS and UV spectra.
