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90329-57-0

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90329-57-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90329-57-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,3,2 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 90329-57:
(7*9)+(6*0)+(5*3)+(4*2)+(3*9)+(2*5)+(1*7)=130
130 % 10 = 0
So 90329-57-0 is a valid CAS Registry Number.

90329-57-0Relevant articles and documents

An Expeditious Approach to Tetrazoles from Amides Utilizing Phosphorazidates

Ishihara, Kotaro,Shioiri, Takayuki,Matsugi, Masato

supporting information, p. 6244 - 6247 (2020/07/24)

A novel method was developed for the synthesis of tetrazoles from amides utilizing diphenyl phosphorazidate or bis(p-nitrophenyl) phosphorazidate as both the activator of amide-oxygen for elimination and azide source. Various amides were converted into th

Improved conditions for converting sterically hindered amides to 1,5-disubstituted tetrazoles

Schroeder, Gretchen M.,Marshall, Sydney,Wan, Honghe,Purandare, Ashok V.

experimental part, p. 1404 - 1406 (2010/04/25)

Improved conditions for converting amides into 1,5-disubstituted tetrazoles are described. The optimum reaction conditions [diisopropyl azodicarboxylate (DIAD), diphenylphosphoryl azide (DPPA), and diphenyl-2-pyridyl phosphine in THF at 45 °C] converted s

A Regiochemical Study of the Alkylation of 1,5- and 2,5-Substituted Tetrazoles

Thomas, Edward W.,Cudahy, Michele M.

, p. 1623 - 1627 (2007/10/02)

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