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125781-65-9

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125781-65-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 125781-65-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,5,7,8 and 1 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 125781-65:
(8*1)+(7*2)+(6*5)+(5*7)+(4*8)+(3*1)+(2*6)+(1*5)=139
139 % 10 = 9
So 125781-65-9 is a valid CAS Registry Number.

125781-65-9Downstream Products

125781-65-9Relevant articles and documents

Nucleophilic Attack at Heterocyclic Nitrogen: Unusual Reactivity of the Benzotriazole Heterocyclic Ring

Katritzky, Alan R.,Rachwal, Stanislaw,Offerman, Rick J.,Najzarek, Zbigniew,Yagoub, Ahmed K.,Zhang Yongmin

, p. 1545 - 1551 (2007/10/02)

Grignard reagents attack 1-imidoylbenzotriazoles at the imidoyl carbon atom and also at the benzotriazolyl N-2 and N-3 atoms leading to complex reaction mixtures, the composition of which allowed identification of the main reaction paths.Mechanisms are discussed.Previous examples of nucleophilic attack on pyridine-like nitrogen atoms are reviewed.The 1-imidoylbenzotriazoles were prepared from amides with benzotriazole and phosphoryl chloride.Amides derived from secondary amines give α-(benzotriazol-1-yl)enamines.

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