4-chloro-2-oxo-2H-chromene-3-carbaldehyde

Also known as: 4-chloro-3-formylcoumarin, 4-chlorocoumarin-3-carboxaldehyde, 4-chloro-3-coumarinaldehyde, 4-chloro-2-oxochromene-3-carbaldehyde, 4-chloro-3-formyl-2(2H)-chromenone, AKOS BB-9945, AURORA KA-4151, TIMTEC-BB SBB003464, MFCD00179896, JRH-06901

4-chloro-2-oxo-2H-chromene-3-carbaldehyde (CAS 50329-91-4) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C10H5ClO3 and a molecular weight of 208.59800 g/mol. Key properties include a melting point of 126-130ºC(lit.), a boiling point of 374.5ºC at 760 mmHg, a density of 1.47g/cm3 and a flash point of 173.7ºC. 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.: 50329-91-4
Jingsj CID: J-39378-2
Molecular Formula: C₁₀H₅ClO₃
Molecular Weight: 208.59800 g/mol
Category: Organohalogen Compounds
Last updated: 8/21/2026

Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Melting Point	126-130ºC(lit.)
Boiling Point	374.5ºC at 760 mmHg
Density	1.47g/cm3
Flash Point	173.7ºC
Exact Mass	207.99300
PSA	47.28000
LogP	2.25890
Refractive Index	1.618

GHS Safety & Compliance

IrritantSignal word: Warning

H315 — Causes skin irritation
H319 — Causes serious eye irritation
H335 — May cause respiratory irritation

Customs & Trade Information

HS Code	2932209090
Summary	2932209090. other lactones. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 4-chloro-2-oxo-2H-chromene-3-carbaldehyde?

The CAS number of 4-chloro-2-oxo-2H-chromene-3-carbaldehyde is 50329-91-4.

What are the molecular formula and molecular weight of 4-chloro-2-oxo-2H-chromene-3-carbaldehyde?

4-chloro-2-oxo-2H-chromene-3-carbaldehyde has molecular formula C10H5ClO3 and molecular weight 208.59800 g/mol.

Is 4-chloro-2-oxo-2H-chromene-3-carbaldehyde hazardous?

4-chloro-2-oxo-2H-chromene-3-carbaldehyde has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of 4-chloro-2-oxo-2H-chromene-3-carbaldehyde?

For 4-chloro-2-oxo-2H-chromene-3-carbaldehyde, Upstream Products: 4-Hydroxycoumarin, N,N-Dimethylformamide, N-Methylformanilide; Downstream Products: 4-hydroxy-2-oxo-2H-chromene-3-carbaldehyde.

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

Last updated: 8/21/2026

How to cite: Jingsj. "4-chloro-2-oxo-2H-chromene-3-carbaldehyde (CAS 50329-91-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-39378-2 (accessed 2026-11-09).

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