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55982-12-2

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55982-12-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 55982-12-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,9,8 and 2 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 55982-12:
(7*5)+(6*5)+(5*9)+(4*8)+(3*2)+(2*1)+(1*2)=152
152 % 10 = 2
So 55982-12-2 is a valid CAS Registry Number.

55982-12-2Relevant articles and documents

Improved synthesis of sterically encumbered heteroaromatic biaryls from aromatic β-keto esters

Rosen, Brandon R.,Ul Sharif, Ehesan,Miles, Dillon H.,Chan, Nicholas S.,Leleti, Manmohan R.,Powers, Jay P.

supporting information, (2020/03/25)

A protocol for the synthesis of hindered 4-aryl 2-aminopyrimidines from β–keto esters is described. The process employs trifluoroethanol as an essential additive to promote the guanidine condensation reaction, enabling the synthesis of 25 aryl- and heteroaryl substituted aminopyrimidines in good yields and high purities with no column chromatography. The conditions described herein are readily scalable and have been employed in the large-scale synthesis of the clinical A2a/A2bR antagonist AB928.

Research on antitumor agents. XI. Formation of pyrimidine derivatives from 4 hydroxy and 4 ethoxycoumarins

Takagi,Hubert Habart

, p. 681 - 683 (2007/10/08)

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