4-Aminopyrimidine
Also known as: Pyrimidin-4-amine, 4-Pyrimidinamine, 4-Pyrimidineamine, Pyrimidin-4-ylamine, Aminopyrimidine, 3,4-Dihydro-4-iminopyrimidine, NSC 401236
4-Aminopyrimidine (CAS 591-54-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H5N3 and a molecular weight of 95.103 g/mol. Key properties include a melting point of 154-156 °C(lit.), a boiling point of 240.7±13.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 122.6±7.0 °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. It is listed by 1 supplier, from 7.00 to 16.00 CNY. Record last updated Aug 21, 2026.
- CAS No.
- 591-54-8
- Jingsj CID
- J-953269-4
- Molecular Formula
- C4H5N3
- Molecular Weight
- 95.103 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
Made to OrderPlatform-operated | 99% 500g | ¥3,500.00 | $1.05 /gBest ¥7.00/g CNY | CN China MOQ 500g | |
Made to OrderPlatform-operated | 99% 100g | ¥900.00 | $1.35 /g ¥9.00/g CNY | CN China MOQ 100g | |
Made to OrderPlatform-operated | 99% 25g | ¥400.00 | $2.39 /g ¥16.00/g CNY | CN China MOQ 25g |
Physicochemical Properties
| Melting Point | 154-156 °C(lit.) |
|---|---|
| Boiling Point | 240.7±13.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 122.6±7.0 °C |
| Exact Mass | 95.048347 |
| PSA | 51.80000 |
| LogP | -0.25 |
| Vapor Pressure | 0.0±0.5 mmHg at 25°C |
| Refractive Index | 1.598 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2933599090 |
|---|---|
| Summary | 2933599090. other compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring 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-Aminopyrimidine?
The CAS number of 4-Aminopyrimidine is 591-54-8.
What are the molecular formula and molecular weight of 4-Aminopyrimidine?
4-Aminopyrimidine has molecular formula C4H5N3 and molecular weight 95.103 g/mol.
Which suppliers offer 4-Aminopyrimidine?
1 supplier(s) listed; reference unit price ¥7.00–16.00 /g.
Is 4-Aminopyrimidine hazardous?
4-Aminopyrimidine has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
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-Aminopyrimidine (CAS 591-54-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-953269-4 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.