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23722-52-3

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23722-52-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 23722-52-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,7,2 and 2 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 23722-52:
(7*2)+(6*3)+(5*7)+(4*2)+(3*2)+(2*5)+(1*2)=93
93 % 10 = 3
So 23722-52-3 is a valid CAS Registry Number.

23722-52-3Relevant articles and documents

Rhodium(II)-catalyzed cross-coupling of diazo compounds

Hansen, Joorn H.,Parr, Brendan T.,Pelphrey, Philip,Jin, Quihui,Autschbach, Jochen,Davies, Huw M. L.

supporting information; experimental part, p. 2544 - 2548 (2011/04/27)

Nothing left to chance: A convenient protocol for selective cross-coupling of diazo compounds for the convergent synthesis of alkenes was developed (see scheme; EDG=aryl, heteroaryl, vinyl; R=O-alkyl, aryl). The selectivity control elements were identifie

40. Diazoaldehyde chemistry: Part 3. Synthesis of 4-acyl-1H-1,2,3-triazole derivatives

Sezer, Oezkan,Dabak, Kadir,Akar, Ahmet,Anac, Olcay

, p. 449 - 453 (2007/10/03)

Ten new α -diazo-β-oxoaldehydes were condensed with aniline, ammonia, hydroxylamine, and semicarbazide to yield new 4-acyl-(1-substituted)-1H-1,2,3-triazoles in moderate-to-good yields. The method is simple and regiospecific. The latter feature makes this method superior to the widely used acylacetylene + azide approach.

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