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2,6-Diethynylpyazine, also known as Pyrazine, 2,6-diethynyl- (9CI), is an organic compound characterized by its unique structure that features two ethynyl (acetylene) groups attached to the 2 and 6 positions of the pyrazine ring. Pyrazine is a heterocyclic aromatic compound consisting of two nitrogen atoms in a six-membered ring, which gives it a distinctive chemical reactivity and properties. The presence of the ethynyl groups enhances its reactivity and allows for further functionalization, making it a valuable building block in organic synthesis. Pyrazine, 2,6-diethynyl- (9CI) is often used in the synthesis of various pharmaceuticals, agrochemicals, and other specialty chemicals due to its ability to form stable complexes and its potential to influence the electronic properties of molecules.

680-98-8

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680-98-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 680-98-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,8 and 0 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 680-98:
(5*6)+(4*8)+(3*0)+(2*9)+(1*8)=88
88 % 10 = 8
So 680-98-8 is a valid CAS Registry Number.

680-98-8Downstream Products

680-98-8Relevant academic research and scientific papers

REACTION OF KETOCARBOXYLIC ESTERS WITH SULFUR TETRAFLUORIDE IN ANHYDROUS HYDROGEN FLUORIDE

Bloshchitsa, F. A.,Burmakov, A. I.,Kunshenko, B. V.,Alekseeva, L. A.,Bel'ferman, A. L.,et al.

, p. 1260 - 1263 (2007/10/02)

The reaction of ketocarboxylic esters with sulfur tetrafluoride in anhydrous hydrogen fluoride at 20 deg C gives good yields of difluorocarboxylic esters.Hydrolysis of the latter gave the corresponding carboxylic acids.

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