ChemicalBook >> CAS DataBase List >>4-Methyl-2-thiophenecarboxylic acid

4-Methyl-2-thiophenecarboxylic acid

CAS No.
14282-78-1
Chemical Name:
4-Methyl-2-thiophenecarboxylic acid
Synonyms
4-METHYLTHIOPHENE-2-CARBOXYLIC ACID;Compound Fr13693;BUTTPARK 99\15-30;ASINEX-REAG BAS 07664671;2-Carboxy-4-methylthiophene;4-methylthiophen-2-carboxlic acid;4-methylthiophen-2-carboxylic acid;4-Methyl-2-thiophenecarboxylic acid;2-Thiophenecarboxylic acid, 4-methyl-;4-Methylthiophene-2-carboxylic acid 97%
CBNumber:
CB9767715
Molecular Formula:
C6H6O2S
Molecular Weight:
142.18
MDL Number:
MFCD00089284
MOL File:
14282-78-1.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-05-28 06:09:16

4-Methyl-2-thiophenecarboxylic acid Properties

Melting point 122-126 °C(lit.)
Boiling point 158 °C(Press: 16 Torr)
Density 1.319±0.06 g/cm3(Predicted)
storage temp. Keep in dark place,Sealed in dry,Room Temperature
form solid
pka 3.76±0.10(Predicted)
Appearance Light yellow to yellow Solid
InChI 1S/C6H6O2S/c1-4-2-5(6(7)8)9-3-4/h2-3H,1H3,(H,7,8)
InChIKey YCIVJGQMXZZPAB-UHFFFAOYSA-N
SMILES Cc1csc(c1)C(O)=O
CAS DataBase Reference 14282-78-1(CAS DataBase Reference)
UNSPSC Code 12352100
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H317-H319
Precautionary statements  P280-P302+P352-P305+P351+P338
PPE dust mask type N95 (US), Eyeshields, Faceshields, Gloves
Hazard Codes  Xi
Risk Statements  36-43
Safety Statements  26-37/39
WGK Germany  3
HazardClass  IRRITANT
HS Code  29349990
Storage Class 11 - Combustible Solids
Hazard Classifications Eye Irrit. 2
Skin Sens. 1

4-Methyl-2-thiophenecarboxylic acid price More Price(66)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 633550 4-Methylthiophene-2-carboxylic acid 97% 14282-78-1 5g $68.9 2023-06-20 Buy
Sigma-Aldrich 633550 4-Methylthiophene-2-carboxylic acid 97% 14282-78-1 25g $335 2023-06-20 Buy
Usbiological 281797 4-Methylthiophene-2-carboxylic acid Asreported 14282-78-1 5g $395 2026-06-03 Buy
Usbiological 281797 4-Methylthiophene-2-carboxylic acid Asreported 14282-78-1 10g $603 2026-06-03 Buy
Usbiological 281797 4-Methylthiophene-2-carboxylic acid Asreported 14282-78-1 25g $901 2026-06-03 Buy
Product number Packaging Price Buy
633550 5g $68.9 Buy
633550 25g $335 Buy
281797 5g $395 Buy
281797 10g $603 Buy
281797 25g $901 Buy

4-Methyl-2-thiophenecarboxylic acid Chemical Properties,Uses,Production

Chemical Properties

white to light yellow crystal powder

Synthesis Reference(s)

Chemistry Letters, 12, p. 127, 1983
Tetrahedron Letters, 15, p. 2373, 1974 DOI: 10.1016/S0040-4039(01)92259-2

4-Methyl-2-thiophenecarboxylic acid Preparation Products And Raw materials

Global( 150)Suppliers
Supplier Tel Email Country ProdList Advantage
SuZhou Nahsor PharmTec Co.,Ltd 13482028355 46630809@qq.com China 129 58
Zhuhai Aobokai Biomedical Technology Co., Ltd. 400-0628126 sales-team@aobchem.com.cn China 49995 58
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
PharmaBlock Sciences (Nanjing),Inc. 025-86918202 4000255188 sales@pharmablock.com China 5000 55
Energy Chemical 400-0056266 sales8178@energy-chemical.com China 44850 61
Wuhan Chemwish Technology Co., Ltd 86-027-67849912 sales@chemwish.com China 35884 56
Capot Chemical Co., Ltd +86 (0) 571 85 58 67 18 China 18187 66
Shanghai Sinch Parmaceuticals Tech. Co. Ltd. +86-21-54098501 sales@sinch.com.cn China 11592 64
Adamas Reagent, Ltd. 400-6009262 15618770481 yhx@titansci.com China 14098 59
Accela ChemBio Co.,Ltd. 021-50795510 4000665055 marketing@accelachem.com China 10972 64

View Lastest Price from 4-Methyl-2-thiophenecarboxylic acid manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
4-Methyl-2-thiophenecarboxylic acid  pictures 2026-08-20 4-Methyl-2-thiophenecarboxylic acid
14282-78-1
$1.10 1g 99.00% 100 Tons Dideu Industries Group Limited
4-Methyl-2-thiophenecarboxylic acid pictures 2026-02-02 4-Methyl-2-thiophenecarboxylic acid
14282-78-1
$1.00 1g 99% 50tons Shaanxi Dideu Medichem Co. Ltd
4-Methyl-2-thiophenecarboxylic acid pictures 2019-08-09 4-Methyl-2-thiophenecarboxylic acid
14282-78-1
$8.80 1KG 97%-99% 100kg Career Henan Chemical Co
BUTTPARK 99\15-30 ASINEX-REAG BAS 07664671 2-Carboxy-4-methylthiophene 2-Carboxy-4-methylthiophene, 4-Methyl-2-thenoic acid 4-Methylthiophene-2-carboxylic acid 97% 4-Methyl-2-thiophenecarboxylic acid 4-methylthiophen-2-carboxlic acid 4-methylthiophen-2-carboxylic acid 2-Thiophenecarboxylic acid, 4-methyl- 4-Methyl-2-thiophenecarboxylic acid ISO 9001:2015 REACH Compound Fr13693 4-METHYLTHIOPHENE-2-CARBOXYLIC ACID 14282-78-1 Synthetic Reagents Protection and Derivatization Protecting and Derivatizing Reagents Others OthersBuilding Blocks Heterocyclic Building Blocks Protecting and Derivatizing Reagents Protection and Derivatization Thiophenes Thiophen Thiophene&Benzothiophene Thiophens