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23904-33-8

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23904-33-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 23904-33-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,9,0 and 4 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 23904-33:
(7*2)+(6*3)+(5*9)+(4*0)+(3*4)+(2*3)+(1*3)=98
98 % 10 = 8
So 23904-33-8 is a valid CAS Registry Number.

23904-33-8Relevant articles and documents

A STEREOSELECTIVE SYNTHESIS OF (Z)-1-IODO-1-ALKENES

Stork, Gilbert,Zhao, Kang

, p. 2173 - 2174 (1989)

(Z)-1-iodo-1-alkenes can be synthesized stereoselectively via the Wittig reaction of iodomethylenetriphenylphosphorane with aldehydes.

A New Entry of Practical and Chemoselective Iodocarbenoids for Carbonyl Iodomethylenation

Yan, Tu-Hsin,Chen, Mei-Yuan

, p. 390 - 394 (2017/04/24)

Direct oxidative addition of CHI3 to the Mg-TiCl4 bimetallic species resulted in the generation of a highly chemoselective and practically convenient iodomethylenetitanium complex, which efficiently effected condensation even with enolizable or inert carbonyl compounds, such as sterically congested ketones, to provide vinyl iodide compounds.

Halodephosphorylation of α,β-unsaturated phosphonic acid monoesters

Lahrache, Hind,Robin, Sylvie,Rousseau, Gérard

, p. 1635 - 1637 (2007/10/03)

Reaction of α,β-ethylenic and acetylenic phosphonic acid monoesters with (biscollidine)iodine(I) or (biscollidine)bromine(I) hexafluorophosphate led to α,β-unsaturated halides by, without precedent, dephosphorylation reactions.

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