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741633-48-7

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741633-48-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 741633-48-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,4,1,6,3 and 3 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 741633-48:
(8*7)+(7*4)+(6*1)+(5*6)+(4*3)+(3*3)+(2*4)+(1*8)=157
157 % 10 = 7
So 741633-48-7 is a valid CAS Registry Number.

741633-48-7Relevant articles and documents

Stereoselective synthesis of (?)-3-PPP through palladium-catalysed unactivated C(sp3)–H arylation at the C-3 position of L-pipecolinic acid

Zhang, Shi-Jin,Sun, Wen-Wu,Yu, Qun-Ying,Cao, Pei,Dong, Xiao-Ping,Wu, Bin

supporting information, p. 606 - 609 (2017/01/25)

An efficient route for the preparation of (?)-3-PPP(preclamol) using the highly stereoselective palladium-catalysed C(sp3)-H arylation and radical decarboxylation reaction as the key steps is described. The chiral center at the C-3 position of

The synthesis and conformational analysis of optical isomers of 4-phenyl-perhydropyrido[1,2-a]pyrazine-1,3-dione: an example of 'solid state-frozen' dynamics in nitrogen-bridged bicyclic 2,6-diketopiperazines

Dawidowski, Maciej,Herold, Franciszek,Wilczek, Marcin,Kleps, Jerzy,Wolska, Irena,Turlo, Jadwiga,Chodkowski, Andrzej,Widomski, Pawel,Bielejewska, Anna

experimental part, p. 1759 - 1766 (2009/12/28)

The synthesis, chemical properties, and conformational analysis of enantiopure (4R,9aS)-, (4S,9aR)-, (4S,9aS)-, and (4R,9aR)-4-phenyl-perhydropyrido[1,2-a]pyrazine-1,3-diones having potential biological activity are described. An interesting example of the coexistence of two invertomers of the (4R,9aR)-diastereomer in a single crystal unit cell is reported. The invertomers differ in the cis/trans-relationship between the fused rings and in the absolute configuration at the chiral nitrogen atom. The structure and equilibrium distributions of the respective conformers have been determined by NMR spectroscopy in both polar and non-polar solvents at various temperatures. The NMR spectra show that dynamic processes in the imide parts of the interconverting species are restrained by self-aggregation. The (4S,9aR)-diastereomer exists in a single conformation with insignificant dynamic effects.

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