5-Hydroxymethylcytosine
Also known as: 5-Hydroxymethylcytosine, 5hmC, 4-Amino-5-(hydroxymethyl)pyrimidin-2-ol, 4-Amino-2-hydroxy-5-(hydroxymethyl)pyrimidine, 6-Amino-5-(hydroxymethyl)-1H-pyrimidin-2-one, 5-(Hydroxymethyl)cytosine, NSC 27368, 4-Amino-5-(hydroxymethyl)-2(1H)-pyrimidinone, 2(1H)-Pyrimidinone, 4-amino-5-(hydroxymethyl)-
5-Hydroxymethylcytosine (CAS 1123-95-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H7N3O2 and a molecular weight of 141.128 g/mol. Key properties include a melting point of >299.85°C, a boiling point of 543.8±58.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 282.7±32.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1123-95-1
- Jingsj CID
- J-1333667-9
- Molecular Formula
- C5H7N3O2
- Molecular Weight
- 141.128 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | >299.85°C |
|---|---|
| Boiling Point | 543.8±58.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 282.7±32.3 °C |
| Exact Mass | 141.053833 |
| PSA | 92.26000 |
| LogP | -2.86 |
| Vapor Pressure | 0.0±1.5 mmHg at 25°C |
| Refractive Index | 1.702 |
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. 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-Hydroxymethylcytosine?
The CAS number of 5-Hydroxymethylcytosine is 1123-95-1.
What are the molecular formula and molecular weight of 5-Hydroxymethylcytosine?
5-Hydroxymethylcytosine has molecular formula C5H7N3O2 and molecular weight 141.128 g/mol.
What are the upstream and downstream products of 5-Hydroxymethylcytosine?
For 5-Hydroxymethylcytosine, Upstream Products: 5-Methylcytosine, 5-Methyl-2'-deoxycytidine, 5-Methylcytidine.
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-Hydroxymethylcytosine (CAS 1123-95-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1333667-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.