Methyl 2-bromo-2-butenoate

ALDRICH/16503 - (cis+trans), ≥95.0% (GC)

Synonym: Methyl 2-bromocrotonate

CAS Number: 17642-18-1
Empirical Formula (Hill Notation): C₅H₇BrO₂
Molecular Weight: 179.01
EC Number: 241-627-1
MDL Number: MFCD00042891
Linear Formula: CH₃CH=CBrCOOCH₃
Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-16503-5ML	5 mL	$246.00 1/EA	Add To Favorites

This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 16503-5ML.

Properties
Descriptions
Safety Info.
Basic Data

assay	≥95.0% (GC)
bp	178-182 °C (lit.)
density	1.505 g/mL at 20 °C (lit.)
InChI	1S/C5H7BrO2/c1-3-4(6)5(7)8-2/h3H,1-2H3
InChI key	DMKWWKUPZZAUQL-UHFFFAOYSA-N
refractive index	n20/D 1.486
SMILES string	COC(=O)C(Br)=CC
storage temp.	2-8°C

General description:	Methyl 2-bromo-2-butenoate(Methyl (Z)-2-bromocrotonate) yields (S)-2-bromobutanoic acid by baker′s yeast fermentation. It undergoes biotransformation catalyzed by old yellow enzyme to yield methyl (S)-2-bromobutanoate, a key intermediate for the synthesis of chiral drugs. It is a biannelating reagent which participates in double Michael-additions.
Packaging:	5 mL in glass bottle

Symbol	GHS07
Signal word	Warning
Hazard statements	H315 - H319 - H335
Precautionary statements	P302 + P352 - P305 + P351 + P338
Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	26-36
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point(F)	145.4 °F - closed cup
Flash Point(C)	63 °C - closed cup

Purity	≥95.0% (GC)
bp	178-182 °C (lit.)
Density	1.505 g/mL at 20 °C (lit.)
Refractive Index	n20/D 1.486
Storage Temp.	2-8°C
UNSPSC	12352100

To Order From a Quote