Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Thiophene-2-carboxylic acid
Price: Check
Purity: 99.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: Thiophene-2-carboxylic acid
Price: ￥188.0/100g ￥88.0/25g
Purity: 98.0%
Stocking Period: Inquiry
Contact: Liu jia
Email: 2130147988@qq.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 2-Thiophenecarboxylic acid
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

Henan Tianfu Chemical Co., Ltd.
China
Product Name: 2-Thiophenecarboxylic acid
Price: $Inquiry/1kg $Inquiry/25kg $Inquiry/1000kg $Inquiry/10ton
Purity: 99.0%
Stocking Period: Inquiry
Contact: Anson
Email: info@tianfuchem.com

527-72-0

527-72-0 structure

527-72-0 structure

Name: Thiophene-2-carboxylic acid
Chemical Name: thiophene-2-carboxylic acid
CAS Number: 527-72-0
Molecular Formula: C₅H₄O₂S
Molecular Weight: 128.149
Catalog: Pharmaceutical intermediate Heterocyclic compound Thiophene compound
Create Date: 2018-04-14 08:00:00
Modify Date: 2025-08-23 14:16:51

Name	thiophene-2-carboxylic acid
Synonyms	2-Thiophenecarboxylic acid thiophenic acid thiofuroic acid Thiophene-2-carboxylic acid MFCD00005437 2-Thenoic Acid THIOPHENECARBOXYLIC ACID EINECS 208-423-4 2-Thiophenic acid a-Thiophenecarboxylic Acid

Density	1.4±0.1 g/cm3
Boiling Point	260.0±0.0 °C at 760 mmHg
Melting Point	125-127 °C(lit.)
Molecular Formula	C₅H₄O₂S
Molecular Weight	128.149
Flash Point	117.8±19.8 °C
Exact Mass	127.993202
PSA	65.54000
LogP	1.57
Vapour Pressure	0.0±0.5 mmHg at 25°C
Index of Refraction	1.607
Water Solubility	80 g/L (20 ºC)

CHEMICAL IDENTIFICATION

RTECS NUMBER :: XM8330200

CHEMICAL NAME :: 2-Thiophenecarboxylic acid

CAS REGISTRY NUMBER :: 527-72-0

BEILSTEIN REFERENCE NO. :: 0110150

LAST UPDATED :: 199709

DATA ITEMS CITED :: 2

MOLECULAR FORMULA :: C5-H4-O2-S

MOLECULAR WEIGHT :: 128.15

WISWESSER LINE NOTATION :: T5SJ BVQ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 1670 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: THERAP Therapie. (Doin, Editeurs, 8, Place de l'Odeon, F-75006 Paris, France) V.1- 1946- Volume(issue)/page/year: 26,831,1971

Personal Protective Equipment	dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes	Xi:Irritant;
Risk Phrases	R36/37/38
Safety Phrases	S26-S36-S37/39
RIDADR	NONH for all modes of transport
WGK Germany	3
RTECS	XM8330200
HS Code	2934999090

Precursor 9
27761-02-0 636-72-6 188290-36-0 124-38-9
355408-55-8 1003-09-4 201230-82-2 45438-80-0
3437-95-4
DownStream 10
56267-50-6 33955-17-8 4282-31-9 1451-95-2
39098-97-0 5380-42-7 3172-52-9 24065-33-6
32431-84-8 5271-67-0

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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