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API Process Intermediates & Related Compounds

5-Formylcytosine

Available on request

Buy 5-Formylcytosine (CAS 4425-59-6) from Zemixal. Request a quote with price, lead time and documents. Catalogue no. ZX-044598.

Pack sizes
5-Formylcytosine chemical structure
CAS number4425-59-6
FormulaC5H5N3O2
Molar mass139.11 g/mol
Physical formSolid
HS code2933
InChIKeyFHSISDGOVSHJRW-UHFFFAOYSA-N
IUPAC name6-amino-2-oxo-1H-pyrimidine-5-carbaldehyde

About 5-Formylcytosine

Researchers and plant chemists source 5-Formylcytosine from Zemixal for routine and specialised work. Identity at a glance: CAS 4425-59-6, formula C5H5N3O2 and molar mass 139.11 g/mol. It is handled as a solid.

Use cases we see most often

  • API route development
  • Impurity fate & purge studies
  • Analytical method development
  • Fine chemical synthesis

Storage and safety notes

Classified under GHS with signal word Danger and hazard statements H302, H312, H315 and H318. Read the SDS before first use.

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. Each lot travels with a batch certificate of analysis and a 16-section SDS. Request pricing online and we confirm availability, documentation and freight to your country.

Reference standards for Cytosine

See every impurity, metabolite and related compound we list for this API.

Cytosine standards

Typical uses

  • API route development
  • Impurity fate & purge studies
  • Analytical method development
  • Fine chemical synthesis

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Specifications and identifiers

Specifications of 5-Formylcytosine
Product name5-Formylcytosine
Catalogue numberZX-044598
CAS number4425-59-6
IUPAC name6-amino-2-oxo-1H-pyrimidine-5-carbaldehyde
Molecular formulaC5H5N3O2
Molar mass139.11 g/mol
Exact mass139.0382
Physical formSolid
XLogP3-1
H-bond donors / acceptors2 / 3
Topological polar surface area84.6 Ų
HS code2933
InChIKeyFHSISDGOVSHJRW-UHFFFAOYSA-N
SMILESC1=NC(=O)NC(=C1C=O)N
PubChem CID10986305
Synonyms6-Amino-2-oxo-1,2-dihydropyrimidine-5-carbaldehyde, cytosine-5-carbaldehyde, 4-amino-2-oxo-1,2-dihydropyrimidine-5-carbaldehyde, 5-Pyrimidinecarboxaldehyde, 4-amino-1,2-dihydro-2-oxo-, 4-amino-2-oxopyrimidine-5-carbaldehyde

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS05 Corrosive
Corrosive
GHS07 Irritant or harmful
Irritant or harmful

Signal word Danger

  • H302Harmful if swallowed
  • H312Harmful in contact with skin
  • H315Causes skin irritation
  • H318Causes serious eye damage
  • H332Harmful if inhaled
  • H335May cause respiratory irritation

Precautionary statements P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P354 + P338, P317, P319, P321, P330, P332 + P317, P362 + P364, P403 + P233, P405, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of 5-Formylcytosine
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about 5-Formylcytosine

Which CAS number identifies 5-Formylcytosine?
5-Formylcytosine is registered under CAS 4425-59-6. You may also see it listed as 6-Amino-2-oxo-1,2-dihydropyrimidine-5-carbaldehyde, cytosine-5-carbaldehyde, 4-amino-2-oxo-1,2-dihydropyrimidine-5-carbaldehyde. Our catalogue number for this item is ZX-044598.
What are the formula and molar mass of 5-Formylcytosine?
For 5-Formylcytosine, its formula is C5H5N3O2 and its molar mass is 139.11 g/mol. The systematic (IUPAC) name is 6-amino-2-oxo-1H-pyrimidine-5-carbaldehyde. InChIKey FHSISDGOVSHJRW-UHFFFAOYSA-N lets you match it in any structure database.
How is 5-Formylcytosine used in pharmaceutical QC?
5-Formylcytosine is a characterised reference material linked to Cytosine. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for 5-Formylcytosine?
The grade and assay are confirmed on the quotation and the batch COA. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with 5-Formylcytosine?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship 5-Formylcytosine to my country?
Yes. Because 5-Formylcytosine is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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