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90408-11-0

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90408-11-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90408-11-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,4,0 and 8 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 90408-11:
(7*9)+(6*0)+(5*4)+(4*0)+(3*8)+(2*1)+(1*1)=110
110 % 10 = 0
So 90408-11-0 is a valid CAS Registry Number.

90408-11-0Downstream Products

90408-11-0Relevant articles and documents

The Pyrolysis of 2-Azidobenzoates. A New Synthesis of Carbazoles and Other N-Heterocycles

Clancy, Michael G.,Hesabi, Massoud M.,Meth-Cohn, Otto

, p. 429 - 434 (2007/10/02)

The spray pyrolysis of aryl 2-azidobenzoates yields carbazoles, involving a rearrangement whereby the nitrogen of the product is attached to the aryl 1-carbon, a process involving a spiro 6-membered intermediate.When the aryl ortho-positions were both alkyl substituted the product was ab acridan instead.With an ortho-carboxylate, acridone formation competed with that of carbazole.When the CO-O group of the substrate was replaced by O-CO, CO-S, CO-NPh, or SO2-O the pyrolysis was ineffective.Benzyl 2-azidobenzoates, however, pyrolysed to yield 1-benzyl-2,1-benzisoxazolones by an unprecedented C-O insertion reaction of the intermediate nitrene.

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