3-Thienylmalonic acid
Also known as: 2-thiophen-3-ylpropanedioic acid, 2-(Thiophen-3-yl)malonic acid, 3-Thiophenemalonic acid, thien-3-ylmalonic acid, thiophene-3-malonic acid, thiophen-3-ylpropanedioic acid, Propanedioic acid, 2-(3-thienyl)-, Propanedioic acid, 3-thienyl-, MFCD00005469, EINECS 244-198-9
3-Thienylmalonic acid (CAS 21080-92-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H6O4S and a molecular weight of 186.185 g/mol. Key properties include a melting point of 139 °C (dec.)(lit.), a boiling point of 396.8±32.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 193.8±25.1 °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.
- 21080-92-2
- Jingsj CID
- J-32551-9
- Molecular Formula
- C7H6O4S
- Molecular Weight
- 186.185 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 139 °C (dec.)(lit.) |
|---|---|
| Boiling Point | 396.8±32.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 193.8±25.1 °C |
| Exact Mass | 185.998672 |
| PSA | 102.84000 |
| LogP | 1.13 |
| Vapor Pressure | 0.0±1.0 mmHg at 25°C |
| Refractive Index | 1.628 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. other heterocyclic compounds. 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 3-Thienylmalonic acid?
The CAS number of 3-Thienylmalonic acid is 21080-92-2.
What are the molecular formula and molecular weight of 3-Thienylmalonic acid?
3-Thienylmalonic acid has molecular formula C7H6O4S and molecular weight 186.185 g/mol.
Is 3-Thienylmalonic acid hazardous?
3-Thienylmalonic 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 3-Thienylmalonic acid?
For 3-Thienylmalonic acid, Downstream Products: Ethyl 3-thiopheneacetate, 3-Methylthiophene, 2,2-Dimethyl-5-(3-thienyl)-1,3-dioxane-4,6-dione.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Thienylmalonic acid (CAS 21080-92-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-32551-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.