5-Carboxycytosine CAS 3650-93-9
| CAS No. | 3650-93-9 |
| Molecular Formula | C5H5N3O3 |
| Molecular Weight | 155.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 5-Carboxycytosine meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
5-Carboxycytosine (CAS 3650-93-9), molecular formula C5H5N3O3 and molecular weight 155.11 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C5H5N3O3, 5-Carboxycytosine contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 155.11 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C5H5N3O3 |
| Molecular Weight | 155.11 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 3 |
Recommended Standards
- 5-Carboxy-2-hydroxypyridine 1-oxide (CAS 90037-89-1)
- 5-Formyl-1-methyl-1H-1,2,3-triazole-4-carboxylic acid (CAS 2138085-24-0)
- 5-Carbamoylfuran-2-carboxylic acid (CAS 54022-78-5)
- 5-formyl-3-Isoxazolecarboxylic acid methyl ester (CAS 22667-21-6)
- Pyrazolo[5,1-b]quinazolin-9-ol, 3-bromo-5,6,7,8-tetrahydro- (CAS 1310097-13-2)
- 5-Methylbenzo[d]thiazole-2-thiol (CAS 21303-50-4)
- 5-(4-(2-Methoxyphenyl)piperazin-1-yl)-5-oxopentanoic acid (CAS 331274-58-9)
- 2-((Trifluoromethyl)thio)phenol (CAS 33185-56-7)
- Norepinephrine Impurity 98 (CAS CATO-C4X-151498)
- 2,2-Difluoro-2-(1-methyl-1H-pyrazol-5-yl)acetic acid (CAS 1342825-90-4)
- (3,5-Dinitrophenyl)(4-(pyrimidin-2-yl)piperazin-1-yl)methanone (CAS 546120-15-4)
- 1-(3-Chloropropyl)-1H-1,2,4-triazole (CAS 405939-74-4)
- Duloxetine EP Impurity C (CAS 949095-98-1)
- Acetyl Tetrapeptide-5 (CAS 820959-17-9)
Why CATO?
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