1-Methyl-1H-imidazol-5-yl isocyanate
1-甲基-1H-咪唑-5-异氰酸酯
Also known as: 5-isocyanato-1-methyl-1H-imidazole, 5-isocyanato-1-methylimidazole, 5-isocyanato-1-methyl-imidazole, 1H-Imidazole, 5-isocyanato-1-methyl-, 1H-Imidazole,5-isocyanato-1-methyl-(9CI)
1-Methyl-1H-imidazol-5-yl isocyanate (CAS 499770-99-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5N3O and a molecular weight of 123.11300 g/mol. It is also known as 5-isocyanato-1-methyl-1H-imidazole, 5-isocyanato-1-methylimidazole and 5-isocyanato-1-methyl-imidazole. Key properties include a melting point of 40.5ºC, a boiling point of 263.1ºC at 760 mmHg, a density of 1.22g/cm3 and a flash point of 112.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 499770-99-9
- Jingsj CID
- J-1131218-7
- Molecular Formula
- C5H5N3O
- Chinese Name
- 1-甲基-1H-咪唑-5-异氰酸酯
- Molecular Weight
- 123.11300 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 40.5ºC |
|---|---|
| Boiling Point | 263.1ºC at 760 mmHg |
| Density | 1.22g/cm3 |
| Flash Point | 112.9ºC |
Frequently Asked Questions
What is the CAS number of 1-Methyl-1H-imidazol-5-yl isocyanate?
The CAS number of 1-Methyl-1H-imidazol-5-yl isocyanate is 499770-99-9.
What are the molecular formula and molecular weight of 1-Methyl-1H-imidazol-5-yl isocyanate?
1-Methyl-1H-imidazol-5-yl isocyanate has molecular formula C5H5N3O and molecular weight 123.11300 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-Methyl-1H-imidazol-5-yl isocyanate (CAS 499770-99-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1131218-7 (accessed 2026-10-25).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.