275-94-5 Usage
Purification Methods
It is recrystallised repeatedly from de-aerated cyclohexane in the dark or from pet ether/*C6H6 and forms yellow needles. It is soluble in H2O, EtOH and *C6H6, and forms a monohydrate which loses H2O at 60o. The picrate has m 207o(dec). [Nozoe et al. J Am Chem Soc 76 3352 1954, Nukai et al. Bull Chem Soc Jpn 40 1967 1967, Beilstein 23 III/IV 1216.]
Check Digit Verification of cas no
The CAS Registry Mumber 275-94-5 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 2,7 and 5 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 275-94:
(5*2)+(4*7)+(3*5)+(2*9)+(1*4)=75
75 % 10 = 5
So 275-94-5 is a valid CAS Registry Number.
275-94-5Relevant articles and documents
A tropylium annulated N-heterocyclic carbene
Appel, Sebastian,Brüggemann, Peter,Ganter, Christian
supporting information, p. 9020 - 9023 (2020/08/17)
Derivatives of the cationic tropylium annulated imidazolylidene ITrop+ are obtained by hydride abstraction from related cycloheptatriene compounds. Spectroscopic, structural and theoretical data indicate that, as a cationic relative of benzimidazolylidenes, ITrop+ has highly reduced σ-donor and strong π-acceptor character.
