4-Amino-3-nitropyridine
Also known as: 3-Nitro-4-pyridinamine, 3-Nitropyridin-4-amine, 3-Nitro-4-aminopyridine, 4-Pyridinamine, 3-nitro-, (3-Nitro-4-pyridyl)amine
4-Amino-3-nitropyridine (CAS 1681-37-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5N3O2 and a molecular weight of 139.112 g/mol. Key properties include a melting point of 203-207 °C(lit.), a boiling point of 350.4±22.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 165.7±22.3 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1681-37-4
- Jingsj CID
- J-1503643-8
- Molecular Formula
- C5H5N3O2
- Molecular Weight
- 139.112 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 203-207 °C(lit.) |
|---|---|
| Boiling Point | 350.4±22.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 165.7±22.3 °C |
| Exact Mass | 139.038177 |
| PSA | 84.73000 |
| LogP | 1.26 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.646 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2933399090 |
|---|---|
| Summary | 2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. 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-Amino-3-nitropyridine?
The CAS number of 4-Amino-3-nitropyridine is 1681-37-4.
What are the molecular formula and molecular weight of 4-Amino-3-nitropyridine?
4-Amino-3-nitropyridine has molecular formula C5H5N3O2 and molecular weight 139.112 g/mol.
Is 4-Amino-3-nitropyridine hazardous?
4-Amino-3-nitropyridine has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 4-Amino-3-nitropyridine?
For 4-Amino-3-nitropyridine, Upstream Products: 4-Chloro-3-nitropyridine, Aqueous ammonia, 4-Ethoxy-3-nitropyridine hydrochloride; Downstream Products: 4-Hydroxy-3-nitropyridine, 1H-Imidazo[4,5-c]pyridin-4-ol, 3,4-Diamino-2-hydroxypyridine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Amino-3-nitropyridine (CAS 1681-37-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1503643-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.