5-Bromo-1-methyl-1H-imidazole
Also known as: 5-Bromo-1-methylimidazole, 1H-Imidazole, 5-bromo-1-methyl-, 5-BROMO-1-METHYLIMIDAZOLE, 5-BROMO-N-METHYLIMIDAZOLE, MFCD01632218
5-Bromo-1-methyl-1H-imidazole (CAS 1003-21-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H5BrN2 and a molecular weight of 161.000 g/mol. Key properties include a melting point of 40-44 °C(lit.), a boiling point of 271.7±13.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 118.1±19.8 °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.
- 1003-21-0
- Jingsj CID
- J-25987-0
- Molecular Formula
- C4H5BrN2
- Molecular Weight
- 161.000 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 40-44 °C(lit.) |
|---|---|
| Boiling Point | 271.7±13.0 °C at 760 mmHg |
| Density | 1.7±0.1 g/cm3 |
| Flash Point | 118.1±19.8 °C |
| Exact Mass | 159.963608 |
| PSA | 17.82000 |
| LogP | 0.58 |
| Vapor Pressure | 0.0±0.5 mmHg at 25°C |
| Refractive Index | 1.606 |
| Storage Conditions | Keep Cold |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2933290090 |
|---|---|
| Summary | 2933290090. other compounds containing an unfused imidazole 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 5-Bromo-1-methyl-1H-imidazole?
The CAS number of 5-Bromo-1-methyl-1H-imidazole is 1003-21-0.
What are the molecular formula and molecular weight of 5-Bromo-1-methyl-1H-imidazole?
5-Bromo-1-methyl-1H-imidazole has molecular formula C4H5BrN2 and molecular weight 161.000 g/mol.
Is 5-Bromo-1-methyl-1H-imidazole hazardous?
5-Bromo-1-methyl-1H-imidazole 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-Bromo-1-methyl-1H-imidazole?
For 5-Bromo-1-methyl-1H-imidazole, Upstream Products: 4-Bromo-1H-imidazole, iodomethane, 1-methylimidazole; Downstream Products: 7-chloro-2-(3-methylimidazol-4-yl)thieno[3,2-b]pyridine, 5-(3-Bromophenyl)-1-methyl-1H-imidazole, 1,5-Dimethyl-1H-imidazole.
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-Bromo-1-methyl-1H-imidazole (CAS 1003-21-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-25987-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.