Cas 142835-76-5,7-p-Tolyl-1,3-dihydro-azepin-2-one

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Check Digit Verification of cas no

The CAS Registry Mumber 142835-76-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,8,3 and 5 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 142835-76:
(8*1)+(7*4)+(6*2)+(5*8)+(4*3)+(3*5)+(2*7)+(1*6)=135
135 % 10 = 5
So 142835-76-5 is a valid CAS Registry Number.

142835-76-5Upstream product

142835-77-6 O-(4'-Methyl-biphenyl-2-yl)-hydroxylamine

142835-76-5Downstream Products

142835-76-5Relevant academic research and scientific papers

Acid-catalyzed rearrangement of O-(2-arylphenyl)hydroxylamines to aryldihydroazepinones

Endo, Yasuyuki,Kataoka, Ken-Ichiro,Haga, Naoki,Shudo, Koichi

, p. 3339 - 3342 (1992)

Acid-catalyzed rearrangement of O-(2-arylpheynl) hydroxylamines followed by ring enlargement afford 7-aryl-2, 3-dihydro-1H-azepin-2-ones. 2-Amino-2-phenyl-3, 5-cyclohexadienone, an intermediate of the reaction, was trapped as the N-trifluoroacetamide.

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