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1644341-26-3

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1644341-26-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1644341-26-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,4,4,3,4 and 1 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1644341-26:
(9*1)+(8*6)+(7*4)+(6*4)+(5*3)+(4*4)+(3*1)+(2*2)+(1*6)=153
153 % 10 = 3
So 1644341-26-3 is a valid CAS Registry Number.

1644341-26-3Relevant academic research and scientific papers

Cascade Reactions Assisted by Microwave Irradiation: Ultrafast Construction of 2-Quinolinone-Fused γ-Lactones fromN-(o-Ethynylaryl)acrylamides and Formamide

Sacchelli, Bruce A. L.,Rocha, Bianca C.,Andrade, Leandro H.

, p. 5071 - 5075 (2021)

An ultrafast (10 s) methodology to construct novel highly functionalized 2-quinolinones fromN-(o-ethynylaryl)acrylamides (1,7-enynes) is described for the first time. Microwave irradiation enabled the ultrafast synthesis of 2-quinolinone-fused γ-lactones from Fenton’s reagents in formamide. After six key consecutive reactions, including a diastereoselective step, 2-quinolinone-fused γ-lactones were obtained in good overall yield (up to 46%; 10 s).

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