137368-76-4 Usage
Uses
Used in Organic Synthesis:
1H-Pyrazolo[4,3-c]pyridine-6-carboxylic acid, 1-phenyl-4-(phenylamino)-, ethyl ester is used as a building block in organic synthesis for the creation of novel heterocyclic compounds.
Used in Pharmaceutical Research:
In the pharmaceutical industry, 1H-Pyrazolo[4,3-c]pyridine-6-carboxylic acid, 1-phenyl-4-(phenylamino)-, ethyl ester serves as a key intermediate in the synthesis of potential biologically active molecules, contributing to the development of new drugs and therapeutic agents.
Check Digit Verification of cas no
The CAS Registry Mumber 137368-76-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,3,6 and 8 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 137368-76:
(8*1)+(7*3)+(6*7)+(5*3)+(4*6)+(3*8)+(2*7)+(1*6)=154
154 % 10 = 4
So 137368-76-4 is a valid CAS Registry Number.
137368-76-4Relevant academic research and scientific papers
Pyrido annelation reaction by a tandem aza Wittig/electrocyclic ring-closure strategy: Preparation of pyrazolo[4,3-c]- and pyrazolo[3,4-c]pyridine derivatives
Molina,Aller,Lorenzo
, p. 6737 - 6746 (2007/10/02)
The aza Wittig-type reaction of iminophosphorane 3, prepared from 5-formyl-1-phenylpyrazole by sequential treatment with ethyl azidoacetate and triphenylphosphine, with isocyanates, ketenes, aldehydes and carbon disulfide leads to the functionalized pyrazolo[4,3-c]pyridines 5, 7, 9 and 11 respectively. Iminophosphorane 15, prepared from 4-formyl-1-phenylpyrazole, undergoes pyrido annelation by reaction with ketenes to give the isomeric pyrazolo[3,4-c]pyridines 22 in modest yields.
