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500011-91-6

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  • Ethyl 3-bromo-1-(3-chloro-2-pyridinyl)-4,5-dihydro-1H-pyrazole-5-carboxylate cas no. 500011-91-6 98%

    Cas No: 500011-91-6

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500011-91-6 Usage

General Description

5-Bromo-2-(3-chloro-pyridin-2-yl)-3,4-dihydro-2H-pyrazole-3-carboxylic acid ethyl ester is a chemical compound that belongs to the pyrazole carboxylic acid ester family. It is a synthetic organic molecule that contains a pyrazole ring, a bromine atom, and a chloro-pyridin-2-yl moiety. 5-BROMO-2-(3-CHLORO-PYRIDIN-2-YL)-3,4-DIHYDRO-2H-PYRAZOLE-3-CARBOXYLIC ACID ETHYL ESTER is commonly used as a building block in the pharmaceutical industry for the synthesis of various biologically active compounds. It has potential application as an intermediate in the production of pharmaceuticals and agrochemicals for use in research and development. Additionally, it may also have potential applications in the field of medicinal chemistry as a lead compound for the development of new drugs.

Check Digit Verification of cas no

The CAS Registry Mumber 500011-91-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,0,0,1 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 500011-91:
(8*5)+(7*0)+(6*0)+(5*0)+(4*1)+(3*1)+(2*9)+(1*1)=66
66 % 10 = 6
So 500011-91-6 is a valid CAS Registry Number.

500011-91-6Relevant articles and documents

Preparation method of bromopyrazole carboxylate compound

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Paragraph 0026-0033, (2022/02/24)

A preparation method for a bromopyrazole carboxylate compound. The chemical formula is as shows below, formula (I), formula (II), and the definition of each group in the formula is shown in the specification. A method for preparing a bromopyrazole carboxylate compound as a key intermediate in benzamide insecticides. The method is simple and easy to operate, safer, more reliable, and easier for industrial production.

Diamides conformationally restricted with central amino acid: Design, synthesis, and biological activities

Chen, Rui-Jia,Cheng, Jia-Gao,Dong, Le-Feng,Feng, Ting-Ting,Gu, Yu-Cheng,Li, Zhong,Shao, Xu-Sheng,Wang, Gang-Ao,Wang, Jun-Jie,Xu, Xiao-Yong,Xu, Zhi-Ping,Zhou, Cong

, (2022/02/03)

Diamide insecticides, represented by chlorantraniliprole (CHL), were widely applied in the control of lepidopteran insects. In efforts to develop bioactive diamides with novel scaffolds, we design and synthesized a series of diamides containing central amino acids to conformationally simulate CHL. Bioassay results indicated that most compounds containing 1-aminocyclopropane-1-carboxylic acid exhibited excellent larvacidal potency against Mythimna separate and Plutella xylostella. After a systematic structure–activity relationship study, 1–23 was identified as a potential insecticidal candidate with LC50 values of 34.920 mg·L?1 against M. separate and 61.992 mg·L?1 on P. xylostella. Finally, molecular docking revealed the possible binding mode of 1–23 with the target protein, ryanodine receptors.

PROCESS FOR THE PREPARATION OF CHLORANTRANILIPROLE

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Page/Page column 9; 13-15, (2021/02/26)

The present invention relates to two novel, efficient and one-pot methods for synthesizing chlorantraniliprole. In the first scheme, Chlorantraniliprole is prepared by a novel telescopic process starting from 3-Bromo-1-(3-chloropyridin-2-yl)-1H-pyrazole-5-carboxylic acid a key raw material-A (Key RM-A). In the second scheme, starting from Key RM-A, the process steps use of a novel variant of anthranilic acid (Methyl 2-amino-5-chloro-3-methylbenzoate), to get Chlorantraniliprole. Furthermore, the present invention also relates to the synthesis of key starting material for the synthesizing chlorantraniliprole in-situ. All the in-situ steps of the disclosed synthesis methods obtain good yield, without using any expensive reagent or base or harsh reaction conditions, which makes the process simple, environment friendly and more cost effective. With this process the production cost of chlorantraniliprole and its intermediates is substantially reduced; fewer by-products are formed during its synthesis and since it's a one-pot reaction, isolation and purification are easy to achieve.

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