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3-Bromothiophene

CAS No.
872-31-1
Chemical Name:
3-Bromothiophene
Synonyms
S0501;DK938;3-Bromthiophen;β-bromothiophene;3-bromo-thiophen;3-BroMothiofuran;3-Bromothiophene;b-Bromothiophene;3-THIENYL BROMIDE;BROMOTHIOPHENE(3-)
CBNumber:
CB7196229
Molecular Formula:
C4H3BrS
Molecular Weight:
163.04
MDL Number:
MFCD00005417
MOL File:
872-31-1.mol
MSDS File:
SDS
Last updated:2026-05-28 02:56:47
Product description Number Pack Size Price
3-Bromothiophene 97% 106224 5g $64.2
3-Bromothiophene 97% 106224 25g $103
3-Bromothiophene >97.0%(GC) B1067 25g $77
3-Bromothiophene >97.0%(GC) B1067 250g $446
3-Bromothiophene Asreported 262032 25g $290
More product size

3-Bromothiophene Properties

Melting point <-10°C
Boiling point 150 °C (lit.)
Density 1.74 g/mL at 25 °C (lit.)
refractive index n20/D 1.591(lit.)
Flash point 140 °F
storage temp. Keep in dark place,Sealed in dry,2-8°C
solubility Chloroform (Slightly), Methanol (Slightly)
form Liquid
Specific Gravity 1.740
color Clear colorless to slightly yellow
Water Solubility IMMISCIBLE
Sensitive Light Sensitive/Stench
BRN 105338
InChI 1S/C4H3BrS/c5-4-1-2-6-3-4/h1-3H
InChIKey XCMISAPCWHTVNG-UHFFFAOYSA-N
SMILES Brc1ccsc1
CAS DataBase Reference 872-31-1(CAS DataBase Reference)
FDA UNII G818Z74YV0
NIST Chemistry Reference Thiophene, 3-bromo-(872-31-1)
EPA Substance Registry System 3-Bromothiophene (872-31-1)
UNSPSC Code 12352100
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  Flame (GHS02)Skull and Crossbones (GHS06)Environment (GHS09)
GHS02,GHS06,GHS09
Signal word  Danger
Hazard statements  H226-H301-H310+H330-H317-H319-H335-H411
Precautionary statements  P210-P273-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338
target organs Respiratory system
PPE Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
Hazard Codes  T,Xi,N,Xn
Risk Statements  10-25-41-51/53-36/37/38-23/24/25-20/21/22-43-36/37
Safety Statements  26-36/37/39-45-61-38-28A-16-24/25-23-36-36/37-24/35
RIDADR  UN 2929 6.1/PG 2
WGK Germany  3
8
Hazard Note  Irritant
TSCA  TSCA listed
HazardClass  6.1
PackingGroup  II
HS Code  29349990
Storage Class 3 - Flammable liquids
Hazard Classifications Acute Tox. 1 Inhalation
Acute Tox. 2 Dermal
Acute Tox. 3 Oral
Aquatic Chronic 2
Eye Irrit. 2
Flam. Liq. 3
Skin Sens. 1
STOT SE 3
Limited Quantities 100ml (liquid) or 0.5 Kg (solid)
Excepted Quantities Max Inner Pack (1g or 1ml) and Max Outer Pack (500g or 500ml)
NFPA 704
2
3 1

3-Bromothiophene price More Price(69)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 106224 3-Bromothiophene 97% 872-31-1 5g $64.2 2026-04-30 Buy
Sigma-Aldrich 106224 3-Bromothiophene 97% 872-31-1 25g $103 2026-04-30 Buy
TCI Chemical B1067 3-Bromothiophene >97.0%(GC) 872-31-1 25g $77 2026-04-30 Buy
TCI Chemical B1067 3-Bromothiophene >97.0%(GC) 872-31-1 250g $446 2026-04-30 Buy
Usbiological 262032 3-Bromothiophene Asreported 872-31-1 25g $290 2026-06-03 Buy
Product number Packaging Price Buy
106224 5g $64.2 Buy
106224 25g $103 Buy
B1067 25g $77 Buy
B1067 250g $446 Buy
262032 25g $290 Buy

3-Bromothiophene Chemical Properties,Uses,Production

Chemical Properties

clear colourless to slightly yellow liquid. It is not soluble in water, but can dissolve in common organic solvents such as chloroform, benzene, ether, and tetrahydrofuran.

Uses

3-Bromothiophene is used in the preparation of derivatives such as thienylenic alpha, μ-diformyl-alpha-oligothiophenes and 3-lithiothiophene. It is also used in the synthesis of 3-lithiothiophene by reacting with n-butyllithium.

Uses

3-Bromothiophene can be used as a reactant to synthesize:
3,3-Bithiophene via borylation followed by Suzuki coupling.
3-Alkylthiophenes by NiDPPP++ catalyzed cross-coupling with Grignard reagents.
3-Lithiothiophene by treating with n-butyllithium in hexane.
Derivatives of thienylenic α, ωdiformylαoligothiophenes.
N-(2-(3-bromothiophen-2-yl)phenyl)methanesulfonamides by coupling at the 2-position with N-arylmethanesulfonamides, mediated by iodobenzene diacetate (178721).

Preparation

Preparation of 3-bromothiophene using 2,5-dibromothiophene
2,5-Dibromothiophene (121g, 0.5 moles), tris (3,6-dioxaheptyl) amine (1.0g, 0.003 mole), thiophene (500 cm3) and sodium amide (58.5g, 1.5 mole) were successively charged to a flask which had previously been purged with nitrogen. The reaction mixture was stirred and heated under nitrogen at 50-60°C for 6 hours. The product, after work up as described in Example 3, was found to contain 138.5g 3-bromothiophene and 2.6g 2-bromothiophene. The yield of 3-bromothiophene was 85% and the monobromothiophenes were in the ratio of 2 parts 2-bromothiophene to 98 parts 3-bromothiophene.

Reactions

3-Bromothiophene is an electron-rich aromatic hydrocarbon bromide. The bromine atom in it has good electrophilicity. It can perform a Suzuki coupling reaction under the catalysis of metal palladium, and react with different aryl or alkenyl borates. The corresponding substitution products are generated. This reaction is one of the very important methods in organic synthesis, which can build C-C bonds and form complex organic molecular structures.

Synthesis Reference(s)

Journal of the American Chemical Society, 74, p. 2965, 1952 DOI: 10.1021/ja01132a004
Synthetic Communications, 11, p. 25, 1981 DOI: 10.1080/00397918108064278

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View Lastest Price from 3-Bromothiophene manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
3-Bromothiophene pictures 2026-09-02 3-Bromothiophene
872-31-1
$9.00 1KG 99% Henan Fengda Chemical Co., Ltd
3-Bromothiophene  pictures 2026-08-20 3-Bromothiophene
872-31-1
$1.10 1g 99.00% 100 Tons Dideu Industries Group Limited
3-Bromothiophene pictures 2026-06-30 3-Bromothiophene
872-31-1
1KG 98.0% 10000KGS Shaanxi Dideu New Materials Co. Ltd
3-bromo-thiophen beta-Bromothiophene thiophene,3-bromo- β-bromothiophene TIMTEC-BB SBB003930 TIMTEC-BB SBB003931 ALPHA-THIENYL BROMIDE 3-THIENYL BROMIDE BROMOTHIOPHENE(3-) 3-Bromothiophene99% 3-Bromothiophene, 96+% 3-Bromothiophene,97% 3-BroMothiofuran 3-BroMothiophene, 97% 25ML 3-BROMOTHIOPHENE FOR SYNTHESIS 3-Bromothiophene 3-bromothiophene anhydrous b-Bromothiophene Clopidogrel Impurity 75 3-Bromthiophen 3-Bromothiophene, 97%, for synthesis 3-Bromothiophene > 3-Bromothiophene ISO 9001:2015 REACH 3-Bromothiophene pure, 98% 3 - bromine thiophene DK938 3-Bromothiophene in isooctane S0501 872-31-1 872-31-3 HALOGEN Building Blocks Thiophene Derivatives (for Conduting Polymer Research) Reagents for Conducting Polymer Research Heterocyclic Building Blocks Halogenated Heterocycles Thiophenes Heterocycles Halides Thiophenes & Benzothiophenes Thiophene&Benzothiophene Miscellaneous Thiophene Derivatives (for Conduting Polymer Research) Functional Materials Reagents for Conducting Polymer Research Thiophen Thiophenes & Benzothiophenes Thiophenes Heterocycle-oher series alkyl bromide bc0001 XHL