5-Nitrothiophene-2-carboxaldehyde
Also known as: 5-Nitro-2-thiophenecarboxaldehyde, 5-Nitrothiophene-2-carbaldehyde, 2-Formyl-5-nitrothiophene, 5-Nitro-2-thienaldehyde, NSC 168226
5-Nitrothiophene-2-carboxaldehyde (CAS 4521-33-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H3NO3S and a molecular weight of 157.147 g/mol. Key properties include a melting point of 75-77 °C(lit.), a boiling point of 297.2±25.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 133.5±23.2 °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.
- 4521-33-9
- Jingsj CID
- J-1990982-1
- Molecular Formula
- C5H3NO3S
- Molecular Weight
- 157.147 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 75-77 °C(lit.) |
|---|---|
| Boiling Point | 297.2±25.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 133.5±23.2 °C |
| Exact Mass | 156.983368 |
| PSA | 91.13000 |
| LogP | 1.15 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.663 |
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 5-Nitrothiophene-2-carboxaldehyde?
The CAS number of 5-Nitrothiophene-2-carboxaldehyde is 4521-33-9.
What are the molecular formula and molecular weight of 5-Nitrothiophene-2-carboxaldehyde?
5-Nitrothiophene-2-carboxaldehyde has molecular formula C5H3NO3S and molecular weight 157.147 g/mol.
Is 5-Nitrothiophene-2-carboxaldehyde hazardous?
5-Nitrothiophene-2-carboxaldehyde 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 5-Nitrothiophene-2-carboxaldehyde?
For 5-Nitrothiophene-2-carboxaldehyde, Upstream Products: 2-Thiophenecarboxaldehyde, (5-Nitrothiophen-2-yl)methanol, (acetyloxy)(thiophen-2-yl)methyl acetate; Downstream Products: 5-Nitrothiophene-2-carbonyl chloride, 2-(Chloromethyl)-5-nitrothiophene, 5-Nitrothiophene-2-carboxylic 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. "5-Nitrothiophene-2-carboxaldehyde (CAS 4521-33-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1990982-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.