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1638490-73-9

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1638490-73-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1638490-73-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,8,4,9 and 0 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1638490-73:
(9*1)+(8*6)+(7*3)+(6*8)+(5*4)+(4*9)+(3*0)+(2*7)+(1*3)=199
199 % 10 = 9
So 1638490-73-9 is a valid CAS Registry Number.

1638490-73-9Downstream Products

1638490-73-9Relevant articles and documents

Ligand-enabled triple C-H activation reactions: One-pot synthesis of diverse 4-aryl-2-quinolinones from propionamides

Deng, Youqian,Gong, Wei,He, Jian,Yu, Jin-Quan

supporting information, p. 6692 - 6695 (2014/07/08)

Diverse 4-aryl-2-quinolinones are prepared from propionamides in one pot by ligand-promoted triple sequential C-H activation reactions and a stereospecific Heck reaction. In these cascade reactions, three new C-C bonds and one C-N bond are formed to rapidly build molecular complexity from propionic acid. Building complexity: Diverse 4-aryl-2-quinolinones such as 1 are prepared from propionamides in one pot by pyridine ligand-promoted triple sequential C-H activation reactions and a stereospecific Heck reaction. In these cascade reactions, three new C-C bonds and one C-N bond are formed to rapidly build molecular complexity from propionic acid.

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