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340994-89-0

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340994-89-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 340994-89-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,0,9,9 and 4 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 340994-89:
(8*3)+(7*4)+(6*0)+(5*9)+(4*9)+(3*4)+(2*8)+(1*9)=170
170 % 10 = 0
So 340994-89-0 is a valid CAS Registry Number.

340994-89-0Relevant academic research and scientific papers

Double heteroannulation reactions of 1-naphthol with alkyl- and arylmethylidene derivatives of malononitrile dimer

Bardasov, Ivan N.,Alekseeva, Anastasiya U.,Mihailov, Denis L.,Ershov, Oleg V.,Grishanov, Dmitry A.

, p. 1830 - 1832 (2015)

The synthesis of 7H-benzo[7,8]chromeno[2,3-b]pyridine derivatives from the reactions of arylmethylidene derivatives of malononitrile dimer with 1-naphthol is described.

Four component DHARMA-synthesis of some densely functionalized 1,8-naphthyridines

Bardasov, Ivan N.,Alekseeva, Anastasiya U.,Ershov, Oleg V.,Belikov, Mikhail Yu.

, p. 5434 - 5436 (2015/09/15)

We report the one-pot synthesis of the triethylammonium salts of 5,7-diamino-4-aryl-2-(dicyanomethyl)-1,4-dihydro-1,8-naphthyridine-3,6-dicarbonitriles from the reaction of aromatic aldehydes, a malononitrile dimer and triethylamine.

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