Bromomethyl ethyl ketone

{{Chembox

| Name = Bromomethyl ethyl ketone

| IUPACName = 1-Bromobutan-2-one

| OtherNames = Bn-Stoff
Homomartonite
TL-819

| ImageFile = Bromomethyl_ethyl_ketone.svg

| Section1 = {{Chembox Identifiers

| CASNo = 816-40-0

| UNII_Ref = {{fdacite|correct|FDA}}

| UNII = 4UPM4J7CVA

| ChemSpiderID = 12604

| PubChem = 13156

| SMILES = CCC(=O)CBr

| StdInChI = InChI=1S/C4H7BrO/c1-2-4(6)3-5/h2-3H2,1H3

| StdInChIKey = CCXQVBSQUQCEEO-UHFFFAOYSA-N

}}

| Section2 = {{Chembox Properties

| C=4|H=7|Br=1|O=1

}}

}}

Bromomethyl ethyl ketone is a brominated ketone with lachrymatory effects. It was used as a chemical warfare agent in World War I. Bromomethyl ethyl ketone was developed as an alternative to bromoacetone, because acetone, the precursor to bromoacetone, was required for explosives production.{{cite book |title=The War Gases |date=1939 |url=https://archive.org/details/The_War_Gases_Chemistry_and_Analysis_Sartori}}{{cite book |title=War gases, their identification and decontamination |date=1942 |publisher=New York, Interscience Publishers |url=https://archive.org/details/wargasestheiride00jacorich}}