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42122-34-9

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42122-34-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 42122-34-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,1,2 and 2 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 42122-34:
(7*4)+(6*2)+(5*1)+(4*2)+(3*2)+(2*3)+(1*4)=69
69 % 10 = 9
So 42122-34-9 is a valid CAS Registry Number.

42122-34-9Relevant articles and documents

AlBr3-Promoted stereoselective anti-hydroarylation of the acetylene bond in 3-arylpropynenitriles by electron-rich arenes: Synthesis of 3,3-diarylpropenenitriles

Gorbunova, Yelizaveta,Ryabukhin, Dmitry S.,Vasilyev, Aleksander V.

supporting information, p. 2663 - 2667 (2021/11/30)

Reactions of 3-arylpropynenitriles (ArC≡CCN) with electron-rich arenes (Ar'H, benzene and its polymethylated derivatives) under the action of aluminum bromide (AlBr3, 6 equiv) at room temperature for 0.5-2 h result in the stereoselective formation of 3,3-

Carbene-catalyzed LUMO activation of alkyne esters for access to functional pyridines

Mou, Chengli,Wu, Jichang,Huang, Zhijian,Sun, Jun,Jin, Zhichao,Chi, Yonggui Robin

, p. 13359 - 13362 (2017/12/26)

A carbene-catalyzed LUMO activation of α,β-unsaturated alkyne esters is reported. This catalytic process allows for effective reactions of alkyne esters with enamides to synthesize functional pyridines via simple protocols. A previously unexplored unsaturated alkyne acyl azolium intermediate is involved in the key step of the reaction.

Synthesis and fluorescence of the new environment-sensitive fluorophore 6-chloro-2,3-naphthalimide derivative

Katritzky, Alan R.,Ozcan, Sevil,Todadze, Ekaterina

supporting information; experimental part, p. 1296 - 1300 (2010/06/15)

Convenient and efficient synthesis of a new environmentally sensitive chlorine-substituted 2,3-naphthalimide-based fluorophore is reported. Benzotriazole carboxyl group activation of the 6-chloro-fluorophore enabled quick labeling of free and Fmoc-protected amino acids. The photophysical properties of the compounds obtained include high quantum yields in solvents of different polarity: water, methanol, acetonitrile and hexane.

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