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4-benzyl-3-ethoxycarbonyl-1,5-diphenyl-Δ2-1,2,4-triazoline is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

21978-72-3

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21978-72-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21978-72-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,9,7 and 8 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 21978-72:
(7*2)+(6*1)+(5*9)+(4*7)+(3*8)+(2*7)+(1*2)=133
133 % 10 = 3
So 21978-72-3 is a valid CAS Registry Number.

21978-72-3Downstream Products

21978-72-3Relevant academic research and scientific papers

Reaction of 2-Azaallyl Anions with Hydrazonyl Chlorides

Abramov, M. A.,Petrov, M. L.

, p. 264 - 266 (2007/10/03)

2-Azaallyl anions, obtained from N-benzylidenebenzylamine and potassium carbonate in the presence of tetrabuylammonium bromide as phase-transfer catalyst, regioselectively react with N-phenylhydrazonyl chlorides, yielding only cyclic products, Δ2-1,2,4-triazolines. 2-Azaallyl anions give the same products with nitrilimines generated from hydrazonyl chlorides.

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