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155557-31-6

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155557-31-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 155557-31-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,5,5 and 7 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 155557-31:
(8*1)+(7*5)+(6*5)+(5*5)+(4*5)+(3*7)+(2*3)+(1*1)=146
146 % 10 = 6
So 155557-31-6 is a valid CAS Registry Number.

155557-31-6Relevant articles and documents

A one-pot, three-component aminotriazine annulation onto 5-aminopyrazole-4-carbonitriles under microwave irradiation

Lim, Felicia Phei Lin,Luna, Giuseppe,Dolzhenko, Anton V.

, p. 521 - 524 (2015/02/19)

A one-pot, three-component, microwave-assisted reaction of 5-aminopyrazole-4-carbonitriles, triethyl orthoformate and cyanamide afforded novel 7-arylamino-substituted 4-aminopyrazolo[1,5-a][1,3,5]triazine-8-carbonitriles. The reaction proceeded in a chemo- and regioselective manner resulting in the successful amino-1,3,5-triazine annulation onto 5-aminopyrazole-4-carbonitriles to give 4-aminopyrazolo[1,5-a][1,3,5]triazine-8-carbonitriles. The operational simplicity of the method and high purity of the products, which can be isolated via simple filtration, make this approach attractive for the preparation of a library of compounds for drug discovery processes.

Discovery of novel 2-anilinopyrazolo[1,5-a]pyrimidine derivatives as c-Src kinase inhibitors for the treatment of acute ischemic stroke

Mukaiyama, Harunobu,Nishimura, Toshihiro,Shiohara, Hiroaki,Kobayashi, Satoko,Komatsu, Yoshimitsu,Kikuchi, Shinji,Tsuji, Eiichi,Kamada, Noboru,Ohnota, Hideki,Kusama, Hiroshi

, p. 881 - 889 (2008/02/08)

We synthesized a series of novel 2-anilinopyrazolo[1,5-a]pyrimidine derivatives and evaluated their ability to inhibit c-Src kinase; 7-(2-amino-2-methylpropylamino)-5-cyclopropyl-2-(3,5-dimethoxyphenylamino) pyrazolo-[1,5-a]pyrimidine-3-carboxamide 7o and

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