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

Also known as: 4-hydroxy-2-oxo-2H-1-benzopyran-3-carboxaldehyde, 4-hydroxy-2-oxo-2H-benzopyran-3-carboxaldehyde, 4-hydroxy-2-oxo-chromen-3-carbaldehyde, 4-hydroxycoumarin-3-carboxaldehyde, 4-hydroxy-3-formylcoumarin, 2H-1-benzopyran-3-carboxaldehyde,4-hydroxy-2-oxo, AKOS BB-9946, AKOS BBS-00001105, AURORA KA-4670, SALOR-INT L481548-1EA

4-hydroxy-2-oxo-2H-chromene-3-carbaldehyde (CAS 51751-34-9) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C10H6O4 and a molecular weight of 190.15200 g/mol. Key properties include a melting point of 138-140°C (lit.), a boiling point of 405.082ºC at 760 mmHg, a density of 1.63g/cm3 and a flash point of 170.059ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 51751-34-9
Jingsj CID: J-1484314-2
Molecular Formula: C₁₀H₆O₄
Molecular Weight: 190.15200 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	138-140°C (lit.)
Boiling Point	405.082ºC at 760 mmHg
Density	1.63g/cm3
Flash Point	170.059ºC
Exact Mass	190.02700
PSA	67.51000
LogP	1.31110
Refractive Index	1.759

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-hydroxy-2-oxo-2H-chromene-3-carbaldehyde?

The CAS number of 4-hydroxy-2-oxo-2H-chromene-3-carbaldehyde is 51751-34-9.

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

4-hydroxy-2-oxo-2H-chromene-3-carbaldehyde has molecular formula C10H6O4 and molecular weight 190.15200 g/mol.

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

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

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-hydroxy-2-oxo-2H-chromene-3-carbaldehyde (CAS 51751-34-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1484314-2 (accessed 2026-11-10).

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