1-Methylcytosine
Also known as: 1-Methylcytosine, 1-METHYLCYTOSIN, N-METHYLCYTOSINE, 4-Amino-1-methylpyrimidin-2(1H)-one, 2(1H)-Pyrimidinone,4-amino-1-methyl-, 1-Methyl-4-aminopyrimidin-2(1H)-one, NSC 47693, 1-Methyl-1,2,3,4-tetrahydro-4-iminopyrimidine-2-one, 1-Methyl-4-amino-1,2-dihydropyrimidine-2-one, 1-methyl cytosin, 1MC, 1bky, 4-amino-1-methyl-1H-pyrimidin-2-one, 4-amino-1-methylpyrimidin-2-one, RARECHEM AQ NN 0292
1-Methylcytosine (CAS 1122-47-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H7N3O and a molecular weight of 125.12900 g/mol. Key properties include a boiling point of 241.6ºC at 760mmHg, a density of 1.34g/cm3 and a flash point of 99.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1122-47-0
- Jingsj CID
- J-1991700-7
- Molecular Formula
- C5H7N3O
- Molecular Weight
- 125.12900 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 241.6ºC at 760mmHg |
|---|---|
| Density | 1.34g/cm3 |
| Flash Point | 99.9ºC |
| Exact Mass | 125.05900 |
| PSA | 61.90000 |
| Vapor Pressure | 0.0356mmHg at 25°C |
| Refractive Index | 1.619 |
| Storage Conditions | 2-8°C |
Activity & Biological Data
| Additional Information | [1]. Kistenmacher, T. J.; Rossi, M. (1977-12-15). "1-Methylcytosine: a refinement". Acta Crystallographica (1977) Section B. 33 (12): 3962–3965. [2]. Hoshika S, et al. Hachimoji DNA and RNA: A genetic system with eight building blocks. Science. 2019 Feb 22;363(6429):884-887. |
|---|
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 1-Methylcytosine?
The CAS number of 1-Methylcytosine is 1122-47-0.
What are the molecular formula and molecular weight of 1-Methylcytosine?
1-Methylcytosine has molecular formula C5H7N3O and molecular weight 125.12900 g/mol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-Methylcytosine (CAS 1122-47-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1991700-7 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.