Chelidonic acid
Also known as: 4-Oxo-4H-pyran-2,6-dicarboxylic acid, 4-Oxopyran-2,6-dicarboxylic acid, 4-Pyranone-2,6-dicarboxylic acid, 4-ketopyran-2,6-dicarboxylic acid, 4-oxopyran-2,6-dicarboxylic acid, 4H-Pyran-2,6-dicarboxylic acid, 4-oxo-, Chelidonic Acid 98%, EINECS 202-749-0, MFCD00006577
Chelidonic acid (CAS 99-32-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H4O6 and a molecular weight of 184.10 g/mol. Key properties include a melting point of 265 °C (dec.)(lit.), a boiling point of 471.3ºC at 760 mmHg, a density of 1.821 g/cm3 and a flash point of 204.1ºC. 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.
- 99-32-1
- Jingsj CID
- J-35988-6
- Molecular Formula
- C7H4O6
- Molecular Weight
- 184.10 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 265 °C (dec.)(lit.) |
|---|---|
| Boiling Point | 471.3ºC at 760 mmHg |
| Density | 1.821 g/cm3 |
| Flash Point | 204.1ºC |
| Exact Mass | 184.00100 |
| PSA | 104.81000 |
| LogP | 0.03620 |
| Storage Conditions | 2-8°C |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Activity & Biological Data
| Target | NF-κB Caspase-1 Glutamate decarboxylase:1.2 μM (Ki) |
|---|---|
| Additional Information | [1]. Shin HJ, et al. Inhibitory effects of chelidonic acid on IL-6 production by blocking NF-κB and caspase-1 in HMC-1 cells. Immunopharmacol Immunotoxicol. 2011 Dec;33(4):614-9. [2]. Porter TG, et al. Chelidonic acid and other conformationally restricted substrate analogues as inhibitors of rat brain glutamate decarboxylase. Biochem Pharmacol. 1985 Dec 1;34(23):4145-50. [3]. Oh HA, et al. Beneficial effects of chelidonic acid on a model of allergic rhinitis. Send to Int Immunopharmacol. 2011 Jan;11(1):39-45. |
Customs & Trade Information
| HS Code | 2932999099 |
|---|---|
| Summary | 2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. 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 Chelidonic acid?
The CAS number of Chelidonic acid is 99-32-1.
What are the molecular formula and molecular weight of Chelidonic acid?
Chelidonic acid has molecular formula C7H4O6 and molecular weight 184.10 g/mol.
Is Chelidonic acid hazardous?
Chelidonic acid 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 Chelidonic acid?
For Chelidonic acid, Upstream Products: Diethyl oxalate, diethyl 2,4,6-trioxoheptanedioate, Diethyl 1,3-acetonedicarboxylate; Downstream Products: 4-Chloropyridine-2,6-dicarboxylic acid, Dimethyl 4-chloropyridine-2,6-dicarboxylate, 4-Ketopimelic acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Chelidonic acid (CAS 99-32-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-35988-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.