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Methyl 2-bromo-2-methylpropionate

CAS No.
23426-63-3
Chemical Name:
Methyl 2-bromo-2-methylpropionate
Synonyms
methyl 2-bromo-2-methylpropanoate;METHYL 2-BROMOISOBUTYRATE;2-BROMO-2-METHYLPROPIONIC ACID METHYL ESTER;Methyl α-broMo-;methyl a-bromobutyrate;METHYL A-BROMOISOBUTYRATE;Methyl α-bromoisobutyrate;Methyl 2-bromoisobutylate;Methyl Alpha-Bromobutyrate;METHYL ALPHA-BROMOISOBUTYRATE
CBNumber:
CB0263289
Molecular Formula:
C5H9BrO2
Molecular Weight:
181.03
MDL Number:
MFCD00017854
MOL File:
23426-63-3.mol
MSDS File:
SDS
Last updated:2026-05-27 17:37:27

Methyl 2-bromo-2-methylpropionate Properties

Boiling point 52 °C(Press: 19 Torr)
Density 1.399 g/mL at 20 °C(lit.)
refractive index n20/D 1.451
Flash point 49 °C
storage temp. under inert gas (nitrogen or Argon) at 2-8°C
solubility Chloroform (Slightly), Methanol (Slightly)
form Oil
color Colourless
BRN 1209484
InChI InChI=1S/C5H9BrO2/c1-5(2,6)4(7)8-3/h1-3H3
InChIKey PQUSVJVVRXWKDG-UHFFFAOYSA-N
SMILES C(OC)(=O)C(Br)(C)C
CAS DataBase Reference 23426-63-3(CAS DataBase Reference)
FDA UNII 8SA4292KBM
UNSPSC Code 12352100
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  Flame (GHS02)
GHS02
Signal word  Warning
Hazard statements  H226
Precautionary statements  P210-P233-P240-P241-P242-P243
PPE Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
Hazard Codes  Xi
Risk Statements  10-36/37/38
Safety Statements  26-36
RIDADR  UN 2929 6.1/PG 2
WGK Germany  3
19
HazardClass  3
HS Code  29159000
Storage Class 3 - Flammable liquids
Hazard Classifications Flam. Liq. 3
Limited Quantities 5.0 L (1.3 gallons) (liquid)
Excepted Quantities Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L)

Methyl 2-bromo-2-methylpropionate price More Price(33)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 17457 Methyl α-bromoisobutyrate ≥99.0% (GC) 23426-63-3 100ml $59.6 2026-04-30 Buy
TCI Chemical M2208 Methyl 2-Bromo-2-methylpropanoate min. 98.0 % 23426-63-3 25G $30 2026-04-30 Buy
TCI Chemical M2208 Methyl 2-Bromo-2-methylpropanoate min. 98.0 % 23426-63-3 100G $75 2026-04-30 Buy
TRC TRC-M296495-5G Methyl 2-Bromo-2-methylpropanoate 23426-63-3 5g $86 2026-06-03 Buy
TRC TRC-M296495-1G Methyl 2-Bromo-2-methylpropanoate 23426-63-3 1g $65 2026-06-03 Buy
Product number Packaging Price Buy
17457 100ml $59.6 Buy
M2208 25G $30 Buy
M2208 100G $75 Buy
TRC-M296495-5G 5g $86 Buy
TRC-M296495-1G 1g $65 Buy

Methyl 2-bromo-2-methylpropionate Chemical Properties,Uses,Production

Synthesis

Bromoisobutyric acid (4.17 g, 25 mmol) was dissolved in a solution of concentrated sulfuric acid (0.75 mL) and methanol (50 mL) and stirred under reflux for 2 h. The solution was then cooled to room temperature and concentrated under vacuum. The residue was dissolved in diethyl ether and washed with 10% aqueous sodium bicarbonate, washed with brine, dried under magnesium sulfate, and concentrated again under vacuum. A colorless oil was obtained (4.2 g, 23 mmol, 93% yield) 1H NMR (300 MHz, CDCl3) δ(ppm): 3.78 (s, 3H), 1.93 (s, 6H) 
	Methyl 2-bromo-2-methylpropionate

Uses

Atom Transfer Radical Polymerization (ATRP) initiator that will generate a polymer with a methyl end group

Application

Methyl 2-bromo-2-methylpropionate can be used as a free radical initiator to participate in polymerization reactions.

Synthesis Reference(s)

The Journal of Organic Chemistry, 43, p. 3684, 1978 DOI: 10.1021/jo00413a009

67-56-1
2052-01-9
23426-63-3
Synthesis of Methyl 2-bromo-2-methylpropionate from Methanol and 2-Bromo-2-methylpropionic acid
Global( 322)Suppliers
Supplier Tel Email Country ProdList Advantage
Shandong Vantage Specialty Chemicals Biotechnology Co., Ltd. 13396369453 18678026865 sdfantai@163.com China 904 58
Meryer (Shanghai) Chemical Technology Co., Ltd. 4006356688 18621169109 market03@meryer.com China 40202 62
TAIYUAN RHF CO.,LTD. +86 351 7031519 sales@RHFChem.com China 2334 56
ShangHai DEMO Chemical Co.,Ltd 400-021-7337 2355568890 sales@demochem.com China 2569 57
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Jia Xing Isenchem Co.,Ltd 0573-85285100 18627885956 isenchem@163.com China 9389 66
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Accela ChemBio Co.,Ltd. 021-50795510 4000665055 marketing@accelachem.com China 10972 64
Shanghai Hanhong Scientific Co.,Ltd. 021-54306202 13764082696 info@hanhongsci.com China 42917 64
Beijing Isomersyn Technology CO;LTD 010-82954736 13391601435 sales@isomersyn.com China 3294 57

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View Lastest Price from Methyl 2-bromo-2-methylpropionate manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Methyl 2-bromo-2-methylpropionate;Methyl 2-bromoisobutyrate pictures 2026-09-12 Methyl 2-bromo-2-methylpropionate;Methyl 2-bromoisobutyrate
23426-63-3
1KG ≥99% 40 Tons/Month Yancheng Longshen Chemical Co.,Ltd.
Methyl 2-bromo-2-methylpropionate pictures 2026-09-11 Methyl 2-bromo-2-methylpropionate
23426-63-3
1KG ≥99% 200mt/year Jinan Finer Chemical Co., Ltd
Methyl 2-bromo-2-methylpropionate pictures 2026-03-20 Methyl 2-bromo-2-methylpropionate
23426-63-3
$1.00 1kg 99% 10 mt Hebei Chuanghai Biotechnology Co., Ltd
Methyl Alpha-Bromobutyrate METHYL ALPHA-BROMOISOBUTYRATE methyl a-bromobutyrate METHYL A-BROMOISOBUTYRATE METHYL-2-BROMO-ISOBUTYRIC ACID METHYL 2-BROMO-2-METHYLPROPIONATE alpha-Bromoisobutyric acid methyl ester 2-BROMOISOBUTYRIC ACID METHYL ESTER 2-Bromo-2-methylpropanoic acid methyl ester 2-Methyl-2-bromopropionic acid methyl ester α-Bromoisobutyric acid methyl ester 2-Bromo-2-methylpropionate methyl ester methyl 2-bromo-2-methyl-propanoate Methyl α-broMo- Methyl alpha-broMoisobutyrate >=99.0% (GC) Methyl α-bromoisobutyrate Methyl 2-bromo-2-methylpropiote Methyl 2-bromoisobutyrate Liquid Alpha - methyl bromoisobutyrate Propanoic acid, 2-bromo-2-methyl-, methyl ester 2-bromo-2-methyl-, methyl ester Propionicacid, Methyl 2-bromo-2-methylpropionate ISO 9001:2015 REACH Methyl 2-bromo-2-methylpropionat Methyl α-bromoisobutyrate Methyl-2-brom-2-methylpropionat 2-Bromoisobutyrate methyl ester α-Bromoisobutyrate methyl ester Methyl α-bromoisobutyrate, CAS 23426-63-3 Methyl 2-bromoisobutylate 2-BROMO-2-METHYLPROPIONIC ACID METHYL ESTER METHYL 2-BROMOISOBUTYRATE methyl 2-bromo-2-methylpropanoate 23426-63-3 23436-63-3 23426-63-6 C3H6BrCOOCH3 CH32CBrCOOCH3 C5H9BrO2 Esters Organic Building Blocks Building Blocks Carbonyl Compounds C2 to C5 ATRP ATRP Initiators Building Blocks C2 to C5 Carbonyl Compounds Chemical Synthesis Esters Materials Science Organic Building Blocks Polymer Science Reagents for Controlled Radical Polymerization Reagents for Polymerization Acids and Derivatives bc0001