21855-16-3 Usage
Uses
Used in Pharmaceutical Industry:
Ethyl 2,6-pyridinedicarboxylateMono is used as a key intermediate in the synthesis of various drugs, contributing to the development of new pharmaceutical compounds. Its chemical properties allow it to participate in multiple reactions, facilitating the creation of diverse medicinal agents.
Used in Agrochemical Industry:
In the agrochemical sector, Ethyl 2,6-pyridinedicarboxylateMono is utilized as a precursor in the production of pesticides. Its role in the synthesis of these compounds helps to enhance crop protection and contribute to more effective agricultural practices.
Used in Dye and Pigment Manufacturing:
Ethyl 2,6-pyridinedicarboxylateMono is also used as a component in the manufacturing of dyes and pigments, where its chemical structure contributes to the color and stability of these products, finding applications in various industries such as textiles, paints, and plastics.
Used in Organic Synthesis:
As a versatile intermediate, Ethyl 2,6-pyridinedicarboxylateMono is widely used in organic synthesis for the preparation of a range of organic compounds. Its ability to engage in multiple chemical reactions makes it a valuable component in the synthesis of various target molecules.
Check Digit Verification of cas no
The CAS Registry Mumber 21855-16-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,8,5 and 5 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 21855-16:
(7*2)+(6*1)+(5*8)+(4*5)+(3*5)+(2*1)+(1*6)=103
103 % 10 = 3
So 21855-16-3 is a valid CAS Registry Number.
InChI:InChI=1/C9H9NO4/c1-2-14-9(13)7-5-3-4-6(10-7)8(11)12/h3-5H,2H2,1H3,(H,11,12)
21855-16-3Relevant academic research and scientific papers
Synthesis, crystal structure, and different local conformations of pyridine-imide oligomers
Zhu, Hengheng,He, Weiwei,Zhan, Chuanlang,Li, Xiao,Guan, Zisheng,Guo, Fengqi,Yao, Jiannian
experimental part, p. 8458 - 8464 (2011/11/13)
In this article, we report a new approach toward synthesis of pyridine-imide oligomers (PIOs). Using this approach, both dimer and trimer were one-pot synthesized from acylation of monomeric monoamide with monomeric dichloride. The yield of trimer was dependent on the alkoxyl terminals: it was 30% for methoyl group, whereas it was 95% for 3-chloro-1-propoxyl terminal. Acylation of dimeric monoamide with monomeric dichloride produced trimer, tetramer, and pentamer in a yield of 34%, 33%, and 28%, respectively. The synthesis was proposed to be mediated through an exchange between pyridine-2-carboxamide and pyridine-2-carbonyl chloride, both forming intramolecular or intermolecular hydrogen-bonds between pyridine-nitrogen and pyridine-2-amide hydrogen atoms. Crystal structure from three trimers with different terminal groups was reported. Analysis on the crystal structures revealed that these three trimers had different local conformations. The different local conformations were originated from the structural tunability of the imide unit in either the coplanarity or bond parameters.
