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57536-38-6

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57536-38-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57536-38-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,5,3 and 6 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 57536-38:
(7*5)+(6*7)+(5*5)+(4*3)+(3*6)+(2*3)+(1*8)=146
146 % 10 = 6
So 57536-38-6 is a valid CAS Registry Number.

57536-38-6Relevant articles and documents

Ruthenium(II)-Catalyzed ortho-C-H Chalcogenation of Benzoic Acids via Weak O-Coordination: Synthesis of Chalcogenoxanthones

Mandal, Anup,Dana, Suman,Sahoo, Harekrishna,Grandhi, Gowri Sankar,Baidya, Mahiuddin

supporting information, p. 2430 - 2433 (2017/05/12)

A general protocol for direct chalcogenation of inert C-H bonds of (hetero)aromatic carboxylic acids is developed with a ruthenium(II) catalyst using readily available starting materials, offering densely substituted ortho-chalcogenyl aromatic acids in high yields (up to 96%). The strategy avoids the installation of an external directing group, use of metallic oxidants, and features operational simplicity with ample substrate scope. Synthetic application en route to biologically important chalcogenoxanthones is also demonstrated. This work represents the first example of ruthenium(II)-catalyzed direct C-H chalcogenation of benzoic acids.

Potential antipsychotics: 2 methoxy, 2 methylthio, 2 (dimethylsulfamoyl) and 2 trifluoromethyl 10 piperazinodibenzo[b,f]thiepins

Sindelar,Dlabac,Metysova,et al.

, p. 1940 - 1959 (2007/10/05)

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