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Pyridine, 5-ethynyl-2-methoxy(9CI) is a chemical compound characterized by the molecular formula C8H7NO. It is a pyridine derivative featuring an ethynyl group and a methoxy group attached to the second carbon atom. Pyridine, 5-ethynyl-2-methoxy(9CI) plays a significant role in the field of organic chemistry, particularly as a building block for synthesizing a wide range of pharmaceuticals, agrochemicals, and dyes. Its potential extends to the development of materials and advanced technologies, making it a versatile component in various industries. However, it is crucial to handle Pyridine, 5-ethynyl-2-methoxy- (9CI) with caution due to its potential health and environmental hazards if mismanaged.

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  • 663955-59-7 Structure
  • Basic information

    1. Product Name: Pyridine, 5-ethynyl-2-methoxy- (9CI)
    2. Synonyms: Pyridine, 5-ethynyl-2-methoxy- (9CI);5-ethynyl-2-methoxypyridine;5-ethynyl-2-methoxypyridi...;Pyridine, 5-ethynyl-2-Methoxy-;2-Methoxy-5-ethynyl pyridine
    3. CAS NO:663955-59-7
    4. Molecular Formula: C8H7NO
    5. Molecular Weight: 133.14728
    6. EINECS: N/A
    7. Product Categories: PYRIDINE
    8. Mol File: 663955-59-7.mol
  • Chemical Properties

    1. Melting Point: N/A
    2. Boiling Point: 196.2±25.0 °C(Predicted)
    3. Flash Point: N/A
    4. Appearance: /
    5. Density: 1.08±0.1 g/cm3(Predicted)
    6. Refractive Index: 1.53
    7. Storage Temp.: under inert gas (nitrogen or Argon) at 2-8°C
    8. Solubility: N/A
    9. PKA: 1.88±0.10(Predicted)
    10. CAS DataBase Reference: Pyridine, 5-ethynyl-2-methoxy- (9CI)(CAS DataBase Reference)
    11. NIST Chemistry Reference: Pyridine, 5-ethynyl-2-methoxy- (9CI)(663955-59-7)
    12. EPA Substance Registry System: Pyridine, 5-ethynyl-2-methoxy- (9CI)(663955-59-7)
  • Safety Data

    1. Hazard Codes: Xn
    2. Statements: 22
    3. Safety Statements: N/A
    4. WGK Germany: 3
    5. RTECS:
    6. HazardClass: IRRITANT
    7. PackingGroup: N/A
    8. Hazardous Substances Data: 663955-59-7(Hazardous Substances Data)

663955-59-7 Usage

Uses

Used in Pharmaceutical Industry:
Pyridine, 5-ethynyl-2-methoxy(9CI) is utilized as a key intermediate in the synthesis of various pharmaceuticals. Its unique structure allows for the development of new drugs with specific therapeutic properties, contributing to the advancement of medicinal chemistry.
Used in Agrochemical Industry:
In the agrochemical sector, Pyridine, 5-ethynyl-2-methoxy(9CI) serves as a vital component in the creation of pesticides and other crop protection agents. Its incorporation enhances the effectiveness of these products, ensuring better agricultural yields and protection against pests.
Used in Dye Industry:
Pyridine, 5-ethynyl-2-methoxy(9CI) is employed as a building block for the synthesis of dyes with specific color properties. Its use in this industry contributes to the development of a diverse range of dyes for various applications, including textiles, plastics, and printing inks.
Used in Material Science:
Pyridine, 5-ethynyl-2-methoxy(9CI) also finds application in the field of material science, where it is used in the development of new materials with unique properties. Its incorporation into these materials can lead to advancements in areas such as electronics, energy storage, and nanotechnology.
Used in Advanced Technology Development:
Pyridine, 5-ethynyl-2-methoxy(9CI) plays a role in the development of advanced technologies, where its unique chemical properties can be harnessed for innovative applications. Its potential use in this field highlights the versatility and importance of Pyridine, 5-ethynyl-2-methoxy- (9CI) in driving technological progress.

Check Digit Verification of cas no

The CAS Registry Mumber 663955-59-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,3,9,5 and 5 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 663955-59:
(8*6)+(7*6)+(6*3)+(5*9)+(4*5)+(3*5)+(2*5)+(1*9)=207
207 % 10 = 7
So 663955-59-7 is a valid CAS Registry Number.
InChI:InChI=1/C8H7NO/c1-3-7-4-5-8(10-2)9-6-7/h1,4-6H,2H3

663955-59-7SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name 5-ethynyl-2-methoxypyridine

1.2 Other means of identification

Product number -
Other names Benzenemethanamine,4-ethynyl-(9CI)

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:663955-59-7 SDS

663955-59-7Relevant articles and documents

RET inhibitor, pharmaceutical composition comprising same and application of RET inhibitor and pharmaceutical composition in medicines

-

, (2021/11/10)

The invention belongs to the field of medicines, and relates to an RET inhibitor, a pharmaceutical composition comprising the same and application of the RET inhibitor and the pharmaceutical composition in medicines. Specifically, the invention relates to

Photochemical Dual-Catalytic Synthesis of Alkynyl Sulfides

Santandrea, Jeffrey,Minozzi, Clémentine,Cruché, Corentin,Collins, Shawn K.

supporting information, p. 12255 - 12259 (2017/09/06)

A photochemical dual-catalytic cross-coupling to form alkynyl sulfides via C(sp)?S bond formation is described. The cross-coupling of thiols and bromoalkynes is promoted by a soluble organic carbazole-based photocatalyst using continuous flow techniques. Synthesis of alkynyl sulfides bearing a wide range of electronically and sterically diverse aromatic alkynes and thiols can be achieved in good to excellent yields (50–96 %). The simple continuous flow setup also allows for short reaction times (30 min) and high reproducibility on gram scale. In addition, we report the first application of photoredox/nickel dual catalysis towards macrocyclization, as well as the first example of the incorporation of an alkynyl sulfide functional group into a macrocyclic scaffold.

Design of α7 nicotinic acetylcholine receptor ligands using the (het)Aryl-1,2,3-triazole core: Synthesis, in vitro evaluation and SAR studies

Ouach, Aziz,Pin, Frederic,Bertrand, Emilie,Vercouillie, Johnny,Gulhan, Zuhal,Mothes, Céline,Deloye, Jean-Bernard,Guilloteau, Denis,Suzenet, Franck,Chalon, Sylvie,Routier, Sylvain

, p. 153 - 164 (2015/11/18)

We report here the synthesis of a large library of 1,2,3-triazole derivatives which were in vitro tested as α7 nAchR ligands. The SAR study revealed that several crucial factors are involved in the affinity of these compounds for α7 nAchR such as a (R) quinuclidine configuration and a mono C-3 quinuclidine substitution. The triazole ring was substituted by a phenyl ring bearing small OMe/CH2F groups or fluorine atom and by several heterocycles such as thiophenes, furanes, benzothiophenes or benzofuranes. Among the 30 derivatives tested, the two derivatives 10 and 39 with Ki in the nanomolar range were identified (2.3 and 3 nM respectively). They exhibited a strict selectivity toward the α4β2 nicotinic receptor (up to 1 μM) but interacted with the 5HT3 receptors with Ki around 3 nM. Synthesis, SAR studies and a full description of the derivatives are reported.

1,4-DISUBSTITUTED 1,2,3-TRIAZOLES, METHODS FOR PREPARING SAME, AND DIAGNOSTIC AND THERAPEUTIC USES THEREOF

-

Paragraph 0435; 0438, (2014/02/16)

A compound having the following general formula (I): wherein: X is a nitrogen atom and Y is a carbon atom; orX is a carbon atom and Y is a nitrogen atom;the Ar group is an aryl or heteroaryl group; andthe RN and RN′ groups, together with the carbon atoms

SUBSTITUTED QUINOLINES AND THEIR USE AS MEDICAMENTS

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Page/Page column 48, (2013/03/26)

The invention relates to new substituted quinolines of formula (1) wherein R1 is a linear or branched C1-6-alkyl, wherein R1 may optionally be substituted by R3 which is selected from the group consisting of a three-, four-, five-, six- or seven-membered cycloalkl; a five-, six- or seven-membered, saturated heterocycle comprising one, two or three heteroatoms each independently selected from the group consisting of N, S and O; and a five- or six-membered heteroaryl comprising one, two or three heteroatoms each independently selected from the group consisting of N, S and O; wherein R3 may optionally be substituted further substituted as defined in claim 1 and wherein R2 is selected from the group consisting of halogen, phenyl, a five- or six-membered monocyclic heteroaryl comprising one, two or three heteroatoms each independently selected from the group consisting of N, S and O; a bicyclic, nine-, ten- or eleven-membered, either aromatic or non-aromatic, but not fully saturated heterocycle comprising one, two, three or four heteroatoms each independently selected from the group consisting of N, S and O; wherein R2 may optionally be further substituted as defined in claim 1, and their use in the preparation of medicaments for the treatment of disease such as asthma, COPD, allergic rhinitis, allergic dermatitis and rheumatoid arthritis.

Substituted Quinolines and Their Use As Medicaments

-

Paragraph 0113; 0114, (2013/03/26)

Disclosed are substituted quinolines of formula 1 wherein R1 and R2 are defined herein, the processing of making and using the same.

Palladium-catalyzed coupling between aryl halides and trimethylsilylacetylene assisted by dimethylaminotrimethyltin

Cai, Liangzhen,Yang, Dujuan,Sun, Zhonghua,Tao, Xiaochun,Cai, Lisheng,Pike, Victor W.

, p. 1059 - 1062 (2012/01/04)

Palladium-catalyzed coupling between aryl halides, especially less reactive ones or N-heteroaryls, and trimethylsilylacetylene in the presence of dimethylaminotrimethyltin generated the coupled products in high yields. The reaction does not need CuI and base as auxiliary agents.

Synthesis of new 1-(2-, 3-, or 4-methanesulfonylphenyl)-2-[5-(N- hydroxypyridin-2(1H)-one)]acetylene regioisomers: A search for novel cyclooxygenase and lipoxygenase inhibitors

Chowdhury, Morshed A.,Chen, Hua,Abdellatif, Khaled R. A.,Dong, Ying,Petruk, Kenneth C.,Knaus, Edward E.

experimental part, p. 58 - 61 (2009/05/07)

A group of acetylene regioisomers were designed such that a cyclooxygenase-2 (COX-2) SO2Me pharmacophore was located at the ortho-, meta-, or para-position of the acetylene C-1 phenyl ring, and an iron-chelating 5-lipoxygenase (5-LOX) N-hydroxy

Synthesis and biological evaluation of 1-(benzenesulfonamido)-2-[5-(N-hydroxypyridin-2(1H)-one)]acetylene regioisomers: A novel class of 5-lipoxygenase inhibitors

Chowdhury, Morshed Alam,Chen, Hua,Abdellatif, Khaled R.A.,Dong, Ying,Petruk, Kenneth C.,Knaus, Edward E.

experimental part, p. 4195 - 4198 (2009/04/10)

A hitherto unknown class of linear acetylene regioisomers were designed such that a SO2NH2 group was located at the ortho-, meta-, or para-position of the acetylene C-1 phenyl ring, and a N-hydroxypyridin-2(1H)-one moiety was attached via its C-5 position to the C-2 position on an acetylene template (scaffold). All three regioisomers inhibited 5-lipoxygenase (5-LOX), where the relative potency order was 2-SO2NH2 (IC50 = 10 μM) >3-SO2NH2 (IC50 = 15 μM) >4-SO2NH2 (IC50 = 68 μM) relative to the reference drug nordihydroguaiaretic acid (NDGA; IC50 = 35 μM). The 2-SO2NH2 regioisomer (ED50 = 86.0 mg/kg po) exhibited excellent oral anti-inflammatory (AI) activity that was more potent than aspirin (ED50 = 128.9 mg/kg) and marginally less potent than ibuprofen (ED50 = 67.4 mg/kg). The N-hydroxypyridin-2(1H)one moiety provides a novel pharmacophore for the design of cyclic hydroxamic mimetics capable of chelating 5-LOX iron for exploitation in the design of 5-LOX inhibitory AI drugs.

3-‘4-HETEROCYCLYL -1,2,3,-TRIAZOL-1-YL!-N-ARYL-BENZAMIDES AS INHIBITORS OF THE CYTOKINES PRODUCTION FOR THE TREATMENT OF CHRONIC INFLAMMATORY DISEASES

-

Page/Page column 76, (2008/06/13)

Disclosed compounds of formula (I), which inhibit production of cytokines involved in inflammatory processes and are thus useful for treating diseases and pathological conditions involving inflammation such as chronic inflammatory disease. Also disclosed are processes for preparing these compounds and pharmaceutical compositions comprising these compounds.

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