486-34-0 Usage
General Description
1,2,7-trimethylnaphthalene is a chemical compound that consists of a naphthalene molecule with three methyl groups attached at the 1, 2, and 7 positions. It is a member of the polycyclic aromatic hydrocarbon family and is often used as a raw material in the production of dyes, pigments, and other industrial chemicals. It has a distinct aromatic odor and is generally considered to be non-toxic, although prolonged exposure to high concentrations may cause irritation to the skin, eyes, and respiratory system. It is also considered to be potentially harmful to aquatic organisms and may persist in the environment for a prolonged period. Studies have indicated that it may have some level of carcinogenicity, although further research is needed to fully understand its potential health effects.
Check Digit Verification of cas no
The CAS Registry Mumber 486-34-0 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,8 and 6 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 486-34:
(5*4)+(4*8)+(3*6)+(2*3)+(1*4)=80
80 % 10 = 0
So 486-34-0 is a valid CAS Registry Number.
486-34-0Relevant articles and documents
Drake,Duvall
, p. 1687 (1936)
Deshydratation des diols-1,2α,β-ethyleniques IV: role de la stereomutation des carbocations allyliques α-hydroxyles sur l'orientation des reactions observees
Dana, Gilbert,Gharbi-Benarous, Josyane,Thuan, Sa Le Thi
, p. 1451 - 1462 (2007/10/02)
The allylic carbocations formed during the dehydration of diols of type A are found to react by five different processes: three nucleophilic attacks (by solvent at the β or δ positions, or by the intramolecular hydroxyl group at δ), a degradation reaction between Cα and Cβ and the classical pinacol rearrangement.Nucleophilic attack at the carbon δ is a very efficient reaction and sometimes (for monosubstituted substrates in β, γ or δ) gives quasi-exclusive products: a ketone for the reaction with H2O in δ or a 2,5-dihydrofuran product for the intramolecular reaction.In the case of γ and δ disubstituted carbocations, the selectivity is less and we show that it is possible to analyze the different steric effects commanding the stereomutation equilibrium of the allylic carbocation and so determining the orientation in the dehydration.
