123958-40-7 Usage
General Description
[(5-oxo-5H-benzo[7]annulen-4-yl)oxy]acetic acid is a chemical compound that is formed from the combination of a benzoannulene ring with an acetic acid group. The compound contains an oxygen atom that is covalently bonded to the benzoannulene ring, as well as a carbonyl group, giving it a ketone functional group. [(5-oxo-5H-benzo[7]annulen-4-yl)oxy]acetic acid has potential applications in organic synthesis and material science, and it may have pharmacological properties as well. Its unique structure makes it an interesting and potentially useful molecule for further research and development in various fields.
Check Digit Verification of cas no
The CAS Registry Mumber 123958-40-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,9,5 and 8 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 123958-40:
(8*1)+(7*2)+(6*3)+(5*9)+(4*5)+(3*8)+(2*4)+(1*0)=137
137 % 10 = 7
So 123958-40-7 is a valid CAS Registry Number.
123958-40-7Relevant articles and documents
Furan Derivatives. Part 10. Synthesis of Cycloheptabenzofuran
Horaguchi, Takaaki,Hasegawa, Eietsu,Shimizu, Takahachi,Tanemura, Kiyoshi,Suzuki, Tsuneo
, p. 365 - 369 (2007/10/02)
Cycloheptabenzofuran 2 was synthesized by heating (5-oxo-5H-benzocyclohepten-4-yloxy)acetic acid 16 with sodium acetate in acetic anhydride or by photocyclization of 16 in acetonitrile.Several reactions of cycloheptabenzofuran 2 were examined.Protonation of 2 with trifluoroacetic acid occurred at the 2-position to give a tropylium ion 17.Catalytic hydrogenation of 2 with palladium on charcoal proceeded smoothly to give tetrahydrocycloheptabenzofuran 18.The Diels-Alder reaction of 2 with tetracyanoethylene produced an adduct 19.Formylation of 2 with phosphorus oxychloride and dimethylformamide occurred easily at the 2-position to afford compound 20.Cycloheptabenzofuran 2 has both properties of heptafulvene and benzofuran.