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
- Molecular Weight:
- 140.2
- MDL Number:
- MFCD00014529
- MOL File:
- 13679-74-8.mol
- MSDS File:
- SDS
Melting point | 24-28 °C(lit.) |
---|---|
Boiling point | 65-67 °C1 mm Hg(lit.) |
Density | 1.106 g/mL at 25 °C(lit.) |
FEMA | 4643 | 2-ACETYL-5-METHYLTHIOPHENE |
refractive index |
n |
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) |
Substances Added to Food (formerly EAFUS) | 2-ACETYL-5-METHYLTHIOPHENE |
EWG's Food Scores | 1 |
FDA UNII | 2HS3I278W9 |
NIST Chemistry Reference | 2-Acetyl-5-methylthiophene(13679-74-8) |
SAFETY
Risk and Safety Statements
Symbol(GHS) | GHS07 |
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---|---|---|---|---|---|---|---|---|---|---|
Signal word | Warning | |||||||||
Hazard statements | H302 | |||||||||
Precautionary statements | P301+P312a-P330-P501a-P264-P270-P301+P312+P330-P501 | |||||||||
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 | |||||||||
NFPA 704 |
|
1-(5-Methyl-2-thienyl)ethan-1-one price More Price(37)
Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
---|---|---|---|---|---|---|---|
Sigma-Aldrich | S552038 | METHYL 5-METHYL-2-THIENYL KETONE AldrichCPR | 13679-74-8 | 250mg | $179 | 2024-03-01 | Buy |
Sigma-Aldrich | 533610 | 2-Acetyl-5-methylthiophene 98% | 13679-74-8 | 25g | $421 | 2024-03-01 | Buy |
TCI Chemical | A1181 | 2-Acetyl-5-methylthiophene >96.0%(GC) | 13679-74-8 | 5g | $60 | 2024-03-01 | Buy |
Alfa Aesar | A11282 | 2-Acetyl-5-methylthiophene, 98% | 13679-74-8 | 5g | $51.65 | 2024-03-01 | Buy |
Alfa Aesar | A11282 | 2-Acetyl-5-methylthiophene, 98% | 13679-74-8 | 25g | $187.65 | 2024-03-01 | Buy |
1-(5-Methyl-2-thienyl)ethan-1-one Chemical Properties,Uses,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
Supplier | Tel | Country | ProdList | Advantage | |
---|---|---|---|---|---|
JINING XINHE CHEMICAL CO., LTD | +8615318402391 | sales@xinhepharma.com | China | 808 | 58 |
ATK CHEMICAL COMPANY LIMITED | +undefined-21-51877795 | ivan@atkchemical.com | China | 32836 | 60 |
career henan chemical co | +86-0371-86658258 +8613203830695 | sales@coreychem.com | China | 29888 | 58 |
Hubei Jusheng Technology Co.,Ltd. | 18871490254 | linda@hubeijusheng.com | CHINA | 28180 | 58 |
Xi'an Kono chem co., Ltd., | 029-86107037 13289246953 | info@konochemical.com | China | 2995 | 58 |
Chongqing Chemdad Co., Ltd | +86-023-6139-8061 +86-86-13650506873 | sales@chemdad.com | China | 39916 | 58 |
Alchem Pharmtech,Inc. | 8485655694 | sales@alchempharmtech.com | United States | 63711 | 58 |
Wuhan Chemwish Technology Co., Ltd | 027-67849912 | sales@chemwish.com | CHINA | 10828 | 58 |
CONIER CHEM AND PHARMA LIMITED | +8618523575427 | sales@conier.com | China | 49392 | 58 |
SIMAGCHEM CORP | +86-13806087780 | sale@simagchem.com | China | 17367 | 58 |
View Lastest Price from 1-(5-Methyl-2-thienyl)ethan-1-one manufacturers
Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
---|---|---|---|---|---|---|---|---|
2024-07-21 | 1-(5-Methyl-2-thienyl)ethan-1-one
13679-74-8
|
US $0.00-0.00 / kg | 1kg | 98% | 10ton | JINING XINHE CHEMICAL CO., LTD | ||
2022-03-29 | 1-(5-Methyl-2-thienyl)ethan-1-one
13679-74-8
|
US $1.10 / g | 1g | 99.00% | 100 Tons | Dideu Industries Group Limited | ||
2019-07-06 | 1-(5-Methyl-2-thienyl)ethan-1-one
13679-74-8
|
US $1.00 / KG | 1G | 98% | 100kg | Career Henan Chemical Co |
- 1-(5-Methyl-2-thienyl)ethan-1-one
13679-74-8
- US $0.00-0.00 / kg
- 98%
- JINING XINHE CHEMICAL CO., LTD
- 1-(5-Methyl-2-thienyl)ethan-1-one
13679-74-8
- US $1.10 / g
- 99.00%
- Dideu Industries Group Limited
- 1-(5-Methyl-2-thienyl)ethan-1-one
13679-74-8
- US $1.00 / KG
- 98%
- Career Henan Chemical Co
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