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1172591-90-0

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1172591-90-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1172591-90-0 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,2,5,9 and 1 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1172591-90:
(9*1)+(8*1)+(7*7)+(6*2)+(5*5)+(4*9)+(3*1)+(2*9)+(1*0)=160
160 % 10 = 0
So 1172591-90-0 is a valid CAS Registry Number.

1172591-90-0Relevant articles and documents

Synthesis of Cycloheptatrienes, Oxepines, Thiepines, and Silepines: A Comparison between Br?nsted Acid and Au-Catalysis

Alcarazo, Manuel,Golz, Christopher,Sprenger, Kristin

, p. 6245 - 6254 (2020/10/02)

The cyclization of 1-(benzyl-, oxyaryl-, thioaryl-, and silaaryl)-2-ethynylbenzenes under Br?nsted acid- and Au(I)-catalysis is described. Br?nsted acid catalysis favors without exception the formation of the products derived from the regioselective proto

Synthesis of functionalized 1 H -indenes via copper-catalyzed arylative cyclization of arylalkynes with aromatic sulfonyl chlorides

Zeng, Xiaoming,Ilies, Laurean,Nakamura, Eiichi

supporting information; scheme or table, p. 17638 - 17640 (2011/12/14)

A variety of polysubstituted 1H-indenes can be prepared through the copper-catalyzed arylative cyclization of simple arylalkynes with commercially available aromatic sulfonyl chlorides that function as an aryl group donor. The reaction tolerates a broad r

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