5-Azacytosine
Also known as: 4-Amino-1,3,5-triazin-2(1H)-one, 4-Amino-s-triazin-2(1H)-one, 2-Amino-4-hydroxy-1,3,5-triazine, 6-Amino-1,3,5-triazin-2(1H)-one, 5-Azacytosine hydrate, Azacytosine, 4-Amino-1,3,5-triazin-2-ol, 4-Amino-1,2-dihydro-1,3,5-triazin-2-one
5-Azacytosine (CAS 931-86-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C3H4N4O and a molecular weight of 112.090 g/mol. Key properties include a melting point of 300 ºC, a boiling point of 503.1ºC at 760 mmHg, a density of 1.86 and a flash point of 258.1ºC. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 931-86-2
- Jingsj CID
- J-35712-0
- Molecular Formula
- C3H4N4O
- Molecular Weight
- 112.090 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 300 ºC |
|---|---|
| Boiling Point | 503.1ºC at 760 mmHg |
| Density | 1.86 |
| Flash Point | 258.1ºC |
| Exact Mass | 112.038513 |
| PSA | 84.66000 |
| LogP | -2.33 |
| Refractive Index | 1.801 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
Customs & Trade Information
| HS Code | 2933699090 |
|---|---|
| Summary | 2933699090 other compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 5-Azacytosine?
The CAS number of 5-Azacytosine is 931-86-2.
What are the molecular formula and molecular weight of 5-Azacytosine?
5-Azacytosine has molecular formula C3H4N4O and molecular weight 112.090 g/mol.
Is 5-Azacytosine hazardous?
5-Azacytosine has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.
What are the upstream and downstream products of 5-Azacytosine?
For 5-Azacytosine, Upstream Products: N,N-Dimethylformamide dimethyl acetal, Decitabine, Guanylurea; Downstream Products: Azacitidine, Decitabine, Pymetrozine.
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-Azacytosine (CAS 931-86-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-35712-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.