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57691-19-7

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57691-19-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57691-19-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,6,9 and 1 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 57691-19:
(7*5)+(6*7)+(5*6)+(4*9)+(3*1)+(2*1)+(1*9)=157
157 % 10 = 7
So 57691-19-7 is a valid CAS Registry Number.

57691-19-7Relevant articles and documents

Facile Synthesis of Keto Nitriles by Cu(II)-Promoted Photooxidative Cleavage of Cyclic Olefins

Shimizu, Isao,Fujita, Munetsugu,Nakajima, Takayuki,Sato, Tadashi

, p. 887 - 888 (1997)

Reaction of trisubstituted cyclic olefins with NaN3 in the presence of Cu(OTf)2 upon irradiation under oxygen gave keto nitriles in good yields. 1,5-Dimethyl-1,5-cyclooctadiene and 1,5,9-trimethyl-1,5,9-cyclododecatriene were converted into the corresponding unsaturated keto nitriles.

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