Chinese Japanese Germany Korea
ChemicalBook >> CAS DataBase List >>2,5-Dimethylthiophene

2,5-Dimethylthiophene

2,5-Dimethylthiophene Structure
2,5-Dimethylthiophene structure
CAS No.
638-02-8
Chemical Name:
2,5-Dimethylthiophene
Synonyms
Thiophene, 2,5-dimethyl-;2,5-Thioxene;2,5-DIMETHYTHIOPHENE;2,5-DIMETHYLTHIOPHENE;2,5-Dimethylthiophene >2 5-DIMETHYLTHIOPHENE 98+%;2,5-DIMETHYLTHIOPHENE, 98.5%;2,5-Dimethylthiophene, 98.50%;2,5-Dimethylthiophene USP/EP/BP;2,5-DiMethylthiophene, 98.5% 25ML
CBNumber:
CB6181350
Molecular Formula:
C6H8S
Molecular Weight:
112.19
MDL Number:
MFCD00005452
MOL File:
638-02-8.mol
MSDS File:
SDS
Last updated:2025-09-25 17:15:13
Request For Quotation

2,5-Dimethylthiophene Properties

Melting point -63°C
Boiling point 134 °C/740 mmHg (lit.)
Density 0.985 g/mL at 25 °C (lit.)
refractive index n20/D 1.512(lit.)
Flash point 75 °F
storage temp. Keep in dark place,Inert atmosphere,Room temperature
form Liquid
Specific Gravity 0.985
color Clear colorless to slightly yellow
Odor at 0.10 % in propylene glycol. nutty sulfury
Odor Type sulfurous
biological source synthetic
Water Solubility Insoluble in water. Soluble in alcohol, ether and benzene.
BRN 106450
InChIKey GWQOOADXMVQEFT-UHFFFAOYSA-N
LogP 2.523 (est)
CAS DataBase Reference 638-02-8(CAS DataBase Reference)
FDA UNII V6DDX6WB12
NIST Chemistry Reference Thiophene, 2,5-dimethyl-(638-02-8)
EPA Substance Registry System 2,5-Dimethylthiophene (638-02-8)
UNSPSC Code 12352200
NACRES NA.24

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
GHS02
Signal word  Warning
Hazard statements  H226
Precautionary statements  P210-P403+P235
Hazard Codes  Xn,F,Xi
Risk Statements  10-37-20/22
Safety Statements  23-24/25-16-36-33-29-7/9-3/7/9
RIDADR  UN 1993 3/PG 3
WGK Germany  3
HazardClass  3
PackingGroup  II
HS Code  29349990
Limited Quantities 5.0 L (1.3 gallons) (liquid)
Excepted Quantities Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L)
NFPA 704
3
2 0

2,5-Dimethylthiophene price More Price(31)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich D188603 2,5-Dimethylthiophene 98.5% 638-02-8 25g $178 2025-07-31 Buy
Sigma-Aldrich W515507 2,5-Dimethylthiophene ≥98% 638-02-8 25g $121 2022-05-15 Buy
Sigma-Aldrich W515507 2,5-Dimethylthiophene ≥98% 638-02-8 100g $249 2022-05-15 Buy
Sigma-Aldrich 74182 2,5-Dimethylthiophene analytical standard 638-02-8 1ml $69 2022-05-15 Buy
TCI Chemical D1591 2,5-Dimethylthiophene >98.0%(GC) 638-02-8 5mL $26 2025-07-31 Buy
Product number Packaging Price Buy
D188603 25g $178 Buy
W515507 25g $121 Buy
W515507 100g $249 Buy
74182 1ml $69 Buy
D1591 5mL $26 Buy

2,5-Dimethylthiophene Chemical Properties,Uses,Production

Chemical Properties

clear colorless to slightly yellow liquid

Uses

2,5-Dimethylthiophene is used as an intermediate in organic synthesis.

Definition

ChEBI: 2,5-Dimethylthiophene is a member of thiophenes.

Synthesis Reference(s)

The Journal of Organic Chemistry, 20, p. 1363, 1955 DOI: 10.1021/jo01127a012

General Description

2,5-Dimethylthiophene is a volatile flavoring compound that has been identified in the essential oil of onion. It is reported to be one of the sulfur-containing compounds formed via Maillard reaction/Strecker degradation of cysteine with furaneol.

2,5-Dimethylthiophene Preparation Products And Raw materials

Raw materials

2,5-Hexanedione Phosphorus pentasulfide Carbon tetrachloride

Preparation Products

Thiophene(SIV) (9CI) 5-Methylthiophene-2-carboxaldehyde 2,5-Dimethylthiophene-3-boronic acid 2-Methylthiophene 1-(2,5-dimethylthiophen-3-yl)-2-methylpropan-1-one
3-[2-(2,5-dimethylthiophen-3-yl)cyclopenten-1-yl]-2,5-dimethylthiophene CHEMBRDG-BB 4012561 2,5-Dimethyl-thiophene-3,4-dicarbonitrile

1of2

2,5-Dimethylthiophene Suppliers

Global( 290)Suppliers
Supplier Tel Email Country ProdList Advantage
Henan Fengda Chemical Co., Ltd 		+86-371-86557731 +86-13613820652 info@fdachem.com China 20185 58
JINING XINHE CHEMICAL CO., LTD 		+8615318402391 sales@xinhepharma.com China 809 58
career henan chemical co 		+86-0371-86658258 +8613203830695 sales@coreychem.com China 29852 58
Hubei Jusheng Technology Co.,Ltd. 		18871490254 linda@hubeijusheng.com CHINA 28172 58
CONIER CHEM AND PHARMA LIMITED 		+8618523575427 sales@conier.com China 49975 58
SIMAGCHEM CORP 		+86-5922680277 +86-13806087780 sale@simagchem.com China 17346 58
Jinan Qinmu Fine Chemical Co.,Ltd. 		+8618660799346 sales@qinmuchem.com China 1008 58
Career Henan Chemica Co 		+86-0371-86658258 +8613203830695 laboratory@coreychem.com China 30229 58
Hefei TNJ Chemical Industry Co.,Ltd. 		+86-0551-65418671 +8618949823763 sales@tnjchem.com China 34563 58
Shanghai UCHEM Inc. 		+862156762820 +86-13564624040 sales@myuchem.com China 8365 58
Supplier Advantage
Henan Fengda Chemical Co., Ltd 		58
JINING XINHE CHEMICAL CO., LTD 		58
career henan chemical co 		58
Hubei Jusheng Technology Co.,Ltd. 		58
CONIER CHEM AND PHARMA LIMITED 		58
SIMAGCHEM CORP 		58
Jinan Qinmu Fine Chemical Co.,Ltd. 		58
Career Henan Chemica Co 		58
Hefei TNJ Chemical Industry Co.,Ltd. 		58
Shanghai UCHEM Inc. 		58

View Lastest Price from 2,5-Dimethylthiophene manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
2,5-Dimethylthiophene pictures 2025-09-25 2,5-Dimethylthiophene
638-02-8
 US $9.00-0.90 / KG 1KG 99% g-kg-tons, free sample is available Henan Fengda Chemical Co., Ltd
2,5-Dimethylthiophene pictures 2025-07-25 2,5-Dimethylthiophene
638-02-8
 US $0.00-0.00 / KG 1KG 98.0% 10000KGS Shaanxi Dideu New Materials Co. Ltd
2,5-Dimethylthiophene pictures 2024-07-16 2,5-Dimethylthiophene
638-02-8
 US $0.00-0.00 / kg 1kg 99% 10ton JINING XINHE CHEMICAL CO., LTD

2,5-Dimethylthiophene Spectrum

2,5-Dimethylthiophene(638-02-8)MS2,5-Dimethylthiophene(638-02-8)1HNMR2,5-Dimethylthiophene(638-02-8)IR12,5-Dimethylthiophene(638-02-8)Raman

638-02-8(2,5-Dimethylthiophene)Related Search:

Thifensulfuron Tetrahydrothiophene Cephalothin sodium 2,2'-BITHIOPHENE-5-CARBOXALDEHYDE 5-Methyl-2-thiophenecarboxylic acid
2,2':5',2''-TERTHIOPHENE Tetraphenylthiophene 3-Acetyl-2,5-dimethylthiophene 5-(2-PYRIDYL)THIOPHENE-2-CARBOXYLIC ACID 5-Methylthiophene-2-carboxaldehyde
2-ACETYL-5-CYANOTHIOPHENE 3,4-DIMETHYLTHIOPHENE-2,5-DICARBONITRILE BBOT 2-[1-METHYL-3-(TRIFLUOROMETHYL)PYRAZOL-5-YL]-THIOPHENE-5-CARBOXALDEHYDE 1-(5-Methyl-2-thienyl)ethan-1-one
2,5-Thiophenedicarboxylic acid Methyl 3-amino-5-(4-chlorophenyl)thiophene-2-carboxylate 3,4-DIMETHYLTHIENO[2,3-B]THIOPHENE-2-CARBALDEHYDE

1of4

2,5-DIMETHYLTHIOPHENE 2,5-DIMETHYLTHIOPHENE, 98.5% 2 5-DIMETHYLTHIOPHENE 98+% 2,5-DIMETHYTHIOPHENE 2,5-Dimethylthiophene, 98.50% Thiophene, 2,5-dimethyl- 2,5-Thioxene 2,5-DiMethylthiophene, 98.5% 25ML 2,5-Dimethylthiophene > 2,5-Dimethylthiophene USP/EP/BP 638-02-8 630-02-8 638-02-9 638028 C6H8S Building Blocks Thiophenes Heterocyclic Building Blocks thiophene Flavor Building Blocks Heterocyclic Building Blocks Thiophenes Alphabetical Listings C-D Flavors and Fragrances Thiophene&Benzothiophene Heterocyclic Compounds Thiophens