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28561-62-8

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28561-62-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 28561-62-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,5,6 and 1 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 28561-62:
(7*2)+(6*8)+(5*5)+(4*6)+(3*1)+(2*6)+(1*2)=128
128 % 10 = 8
So 28561-62-8 is a valid CAS Registry Number.

28561-62-8Downstream Products

28561-62-8Relevant articles and documents

Tetrazoles: XXXV. Synthesis of 3H-1,3,4-Benzotriazepines from 5-Aryltetrazoles

Artamonova,Koldobskii

, p. 1767 - 1770 (2007/10/03)

Reaction of 5-aryltetrazoles with N,N′-bis(p-tolyl)terephthalimidoyl dichloride under conditions of phase-transfer catalysis yields isomeric N-imidoyltetrazoles whose thermolysis results in formation of 3H-1,3,4-benzotriazepines. The latter are hydrolyzed by the action of hydrochloric acid to afford terephthalic acid and the corresponding aminobenzophenone.

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