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20178-22-7

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20178-22-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20178-22-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,1,7 and 8 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 20178-22:
(7*2)+(6*0)+(5*1)+(4*7)+(3*8)+(2*2)+(1*2)=77
77 % 10 = 7
So 20178-22-7 is a valid CAS Registry Number.

20178-22-7Relevant articles and documents

Synthesis and bioactivity of some 2-oxo-5-aryl-3-hydrazone and 2-oxo-5-aryl-4-hydrazone pyrrolidine derivatives

Mohammat, Mohd Fazli,Najim, Nigar,Mansor, Nurul Shulehaf,Sarman, Sharil,Shaameri, Zurina,Zain, Mazatulikhma Mat,Hamzah, Ahmad Sazali

experimental part, p. 429 - 438 (2011/12/05)

2-Aryl-4,5-dioxopyrrolidine-3-carboxylate and 5-aryl-2,4-dioxopyrrolidine- 3-carboxylate derivatives were successfully synthesized via carbonyl-based multiple component reaction and Dieckmann cyclization, respectively. Successive functional group transformations which include decarboxylation and hydrazonation afforded 2-oxo-5-aryl-3-hydrazone and 2-oxo-5-aryl-4-hydrazone derivatives. Compound 3d exhibited activity against human histiocytic lymphoma (U937) and neuroblastoma (SH-SY5Y) cell lines while compound 6 showed neuroprotective ability from oxidative stress medium induced with H2O2.

Synthesis of 5-aryl-2-oxopyrrole derivatives as synthons for highly substituted pyrroles

Metten, Bert,Kostermans, Maarten,Van Baelen, Gitte,Smet, Mario,Dehaen, Wim

, p. 6018 - 6028 (2007/10/03)

A small library of 2-oxo-5-(hetero)arylpyrroles was prepared starting from 2,3-dioxo-5-(hetero)arylpyrrolidines. The large synthetic possibilities of these 2-oxopyrroles were investigated. The 2-oxopyrroles offer a large number of possible derivatizations

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