1-(5-Methyl-2-thienyl)ethan-1-one

Product Name: 1-(5-Methyl-2-thienyl)ethan-1-one
CAS No.: 13679-74-8
Chemical Name: 1-(5-Methyl-2-thienyl)ethan-1-one
Synonyms: methylthienylcetone;-Methyl-5-acetylthiophene;5-Methyl-2-acetylthiophene;2-ACETYL-5-METHYLTHIOPHENE;Thiophene, 2-acetyl-5-methyl;1-(5-Methyl-2-thienyl)ethanone;1-(5-methyl-2-thienyl)-ethanon;2-Acetyl-5-methylthiophene,98%;2-Acetyl-5-methylthiophene >ketone,methyl5-methyl-2-thienyl
CBNumber: CB8245960
Molecular Formula: C7H8OS
Formula Weight: 140.2
MOL File: 13679-74-8.mol

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1-(5-Methyl-2-thienyl)ethan-1-one Property

Melting point:: 24-28 °C(lit.)
Boiling point:: 65-67 °C1 mm Hg(lit.)
Density: 1.106 g/mL at 25 °C(lit.)
refractive index: n20/D 1.561(lit.)
FEMA: 4643 | 2-ACETYL-5-METHYLTHIOPHENE
Flash point:: >230 °F
storage temp.: under inert gas (nitrogen or Argon) at 2–8 °C
form: Low Melting Crystalline Mass, Powder or Crystals
Specific Gravity: 1.119
color: White to pale yellow
Odor: at 1.00 % in propylene glycol. sweet spicy honey hawthorn almond acacia hyacinth caramellic graham cracker
Odor Type: spicy
Sensitive: Light Sensitive
JECFA Number: 2107
BRN: 110854
LogP: 2.04
CAS DataBase Reference: 13679-74-8(CAS DataBase Reference)
NIST Chemistry Reference: 2-Acetyl-5-methylthiophene(13679-74-8)

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Safety

Hazard Codes: Xn,Xi
Risk Statements: 20/21/22
Safety Statements: 36/37-22
RIDADR: UN 3335
WGK Germany: 3
RTECS: OB4972000
Hazard Note: Irritant
HazardClass: STENCH
HS Code: 29349990

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P330Rinse mouth.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: S552038
Product name: METHYL 5-METHYL-2-THIENYL KETONE
Purity: AldrichCPR
Packaging: 250mg
Price: $179
Updated: 2024/03/01

Sigma-Aldrich

Product number: 533610
Product name: 2-Acetyl-5-methylthiophene
Purity: 98%
Packaging: 25g
Price: $421
Updated: 2024/03/01

TCI Chemical

Product number: A1181
Product name: 2-Acetyl-5-methylthiophene
Purity: >96.0%(GC)
Packaging: 5g
Price: $60
Updated: 2024/03/01

Alfa Aesar

Product number: A11282
Product name: 2-Acetyl-5-methylthiophene, 98%
Packaging: 5g
Price: $51.65
Updated: 2024/03/01

Alfa Aesar

Product number: A11282
Product name: 2-Acetyl-5-methylthiophene, 98%
Packaging: 25g
Price: $187.65
Updated: 2024/03/01

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1-(5-Methyl-2-thienyl)ethan-1-one Chemical Properties,Usage,Production

Chemical Properties

white to light yellow crystal powder

Uses

2-Acetyl-5-methylthiophene may be used in the preparation of:

2-ethyl-5-methylthiophene
(5-methylthiophen-2-yl)glyoxal
(2E)-1-(5-methylthiophen-2-yl)-3-(pyridin-3-yl)prop-2-en-1-one
ethyl 3-(5-methylthiophen-2-yl)-3-oxopropanoate

Definition

ChEBI: 2-acetyl-5-methylthiophene is a thiophene that is substituted by acetyl and methyl groups at positions 2 and 5, respectively. It has a role as a flavouring agent. It is an aromatic ketone, a member of thiophenes and a methyl ketone.

General Description

2-Acetyl-5-methylthiophene is a volatile organic compound formed during the reaction between L-cysteine and dihydroxyacetone in glycerine or triglyceride solvent system. It can be prepared by reacting 2-methylthiophene with acetic anhydride. 2-Acetyl-5-methylthiophene undergoes palladium-catalyzed cross-coupling reaction with aryl bromides to form C-4 arylated product. It reacts with 1,2-bis(5-formyl-2-methylthiophen-3-yl)cyclopentene via Aldol condensation to form a chalcone with photochromic property. The standard molar enthalpies of combustion, formation and vaporization of 2-acetyl-5-methylthiophene are 4341.9 ± 1.8kJ/mol, 158.0 ± 2.1kJ/mol and 62.0 ± 2.6kJ/mol, respectively.

Safety Profile

A poison by intraperitoneal route. A flammable liquid. When heated to decomposition it emits toxic vapors of SOx.

1-(5-Methyl-2-thienyl)ethan-1-one Preparation Products And Raw materials

Raw materials

Preparation Products

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1-(5-Methyl-2-thienyl)ethan-1-one Suppliers

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View Lastest Price from 1-(5-Methyl-2-thienyl)ethan-1-one manufacturers

Career Henan Chemical Co

Product: 1-(5-Methyl-2-thienyl)ethan-1-one 13679-74-8
Price: US $1.00/KG
Min. Order: 1G
Purity: 98%
Supply Ability: 100kg
Release date: 2018-08-12

13679-74-8, 1-(5-Methyl-2-thienyl)ethan-1-oneRelated Search:

1-(5-Methyl-2-thienyl)ethan-1-one 2-Methyl-5-propionylthiophene 2-ACETYL-3-AMINO-5-PHENYLTHIOPHENE 2-ACETYL-5-CYANOTHIOPHENE 5-Acetylthiophene-2-carboxylic acid 1-(3-methyl-2-thienyl)ethan-1-on 1-(4-methyl-2-thienyl)ethan-1-one 2-Acetylthiophene 1-[3-AMINO-5-(4-CHLOROPHENYL)-2-THIENYL]ETHAN-1-ONE 2-ACETYL-3-AMINO-5-T-BUTYLTHIOPHENE 1-{5-[3-(DIMETHYLAMINO)PROP-1-YNYL]-2-THIENYL}ETHAN-1-ONE 1-(5-ETHYL-THIOPHEN-2-YL)-ETHANONE 3-(2-ACETYL-5-TERT-BUTYL-THIOPHEN-3-YLCARBAMOYL)-ACRYLIC ACID N-(2-ACETYL-5-TERT-BUTYL-THIOPHEN-3-YL)-SUCCINAMIC ACID 1-(3,5-DIMETHYL-2-THIENYL)ETHAN-1-ONE 2-[5-(2-CHLOROACETYL)-2-THIENYL]ACETIC ACID N1-(2-ACETYL-5-PHENYLTHIEN-3-YL)-2-CHLOROACETAMIDE N1-[2-ACETYL-5-(TERT-BUTYL)-3-THIENYL]-2,3,3-TRICHLOROACRYLAMIDE

1-(5-methyl-2-thiophenyl)ethanone

1-(5-methyl-2-thienyl)ethan-1-one

2-Acetyl-5-Methylthiophene, 98% 25GR

1-(5-methyl-2-thienyl)-ethanon

1-(5-Methyl-2-thienyl)ethanone

1-(5-Methyl-thiophen-2-yl)-ethanone

5-Methyl-2-acetylthiophene

Ethanone, 1-(5-methyl-2-thienyl)-

Ketone, methyl 5-methyl-2-thienyl

ketone,methyl5-methyl-2-thienyl

Methyl 5-methyl-2-thienyl ketone

-Methyl-5-acetylthiophene

methylthienylcetone

Thiophene, 2-acetyl-5-methyl

2-ACETYL-5-METHYLTHIOPHENE

2-Acetyl-5-methylthiophene,98%

2-Acetyl-5-methylthiophene &gt

1-(5-Methyl-2-thienyl)ethan-1-one ISO 9001：2015 REACH

13679-74-8

Thiophenes

Heterocyclic Building Blocks

KETONE

Building Blocks

Heterocyclic Building Blocks

Thiophenes

Thiophene&Benzothiophene

Thiophens