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1256156-74-7

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1256156-74-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1256156-74-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,6,1,5 and 6 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1256156-74:
(9*1)+(8*2)+(7*5)+(6*6)+(5*1)+(4*5)+(3*6)+(2*7)+(1*4)=157
157 % 10 = 7
So 1256156-74-7 is a valid CAS Registry Number.

1256156-74-7Relevant academic research and scientific papers

Selective Synthesis of 3-Arylbenzo-1,2,3-triazin-4(3H)-ones and 1-Aryl-(1H)-benzo-1,2,3-triazoles from 1,3-Diaryltriazenes through Pd(0) Catalyzed Annulation Reactions

Chandrasekhar, Attoor,Sankararaman, Sethuraman

, p. 11487 - 11493 (2017/11/10)

Pd(0) catalyzed carbonylative annulation reaction of 1-(2-iodophenyl)-3-aryltriaz-1-enes in the presence of DABCO and 1 atm of carbon monoxide in toluene at 80 °C gave the corresponding 3-arylbenzo-1,2,3-triazin-4(3H)-ones with high selectivity and in exc

A ligand-free copper (1) catalysed intramolecular N-arylation of diazoaminobenzenes in PEG-water: An expeditious protocol towards regiospecific 1-aryl benzotriazoles

Mukhopadhyay, Chhanda,Tapaswi, Pradip Kumar,Butcher, Ray J.

supporting information; experimental part, p. 4720 - 4729 (2010/11/17)

An efficient and highly versatile method for the synthesis of diverse regiospecific 1-arylbenzotriazoles being important medicinal scaffolds, by the copper (1) catalysed intramolecular N-arylation of diazoaminobenzenes of 2-haloaryldiazonium salts in PEG-water has been developed. A very simple reaction protocol, large number of substrate affordability and excellent yields are the main features of this methodology.

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