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Bromoenol lactone

Also known as: BEL, HELSS, Haloenol lactone suicide substrate, (E)-6-(Bromomethylene)tetrahydro-3-(1-naphthalenyl)-2H-pyran-2-one, (6E)-6-(Bromomethylidene)-3-naphthalen-1-yloxan-2-one, MFCD00270871, 2H-Pyran-2-one, 6-(bromomethylene)tetrahydro-3-(1-naphthalenyl)-, (6E)-

Bromoenol lactone (CAS 88070-98-8) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C16H13BrO2 and a molecular weight of 317.177 g/mol. Key properties include a boiling point of 467.0±45.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 236.2±28.7 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
88070-98-8
Jingsj CID
J-19653-4
Molecular Formula
C16H13BrO2
Molecular Weight
317.177 g/mol
Category
Alcohols
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point467.0±45.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point236.2±28.7 °C
Exact Mass316.009888
PSA26.30000
LogP4.36
Vapor Pressure0.0±1.2 mmHg at 25°C
Refractive Index1.716

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Activity & Biological Data

TargetPLA2:7 μM (IC50)
Additional Information[1]. Fensome-Green A, et al. Bromoenol lactone, an inhibitor of Group V1A calcium-independent phospholipase A2 inhibits antigen-stimulated mast cell exocytosis without blocking Ca2+ influx. Cell Calcium. 2007 Feb;41(2):145-53. [2]. Takuma T, et al. Role of Ca2+-independent phospholipase A2 in exocytosis of amylase from parotid acinar cells. J Biochem. 1997 Jun;121(6):1018-24.

Frequently Asked Questions

What is the CAS number of Bromoenol lactone?

The CAS number of Bromoenol lactone is 88070-98-8.

What are the molecular formula and molecular weight of Bromoenol lactone?

Bromoenol lactone has molecular formula C16H13BrO2 and molecular weight 317.177 g/mol.

Is Bromoenol lactone hazardous?

Bromoenol lactone has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Bromoenol lactone (CAS 88070-98-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-19653-4 (accessed 2026-11-07).

Data for reference only; verify product details with suppliers before purchase.