4-Chloropyrimidin-5-ol CAS 1261536-41-7
| CAS No. | 1261536-41-7 |
| Molecular Formula | C4H3ClN2O |
| Molecular Weight | 130.53 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4-Chloropyrimidin-5-ol (CAS 1261536-41-7), molecular formula C4H3ClN2O and molecular weight 130.53 g/mol, is a CATO reference standard with documented purity and traceability.
4-Chloropyrimidin-5-ol (C4H3ClN2O) contains an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C4H3ClN2O |
| Molecular Weight | 130.53 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloropyrimidin Standards
- 5-Chloropyrimidin-2-ol (CAS 214290-50-3)
- 6-Chloropyrimidin-2(1H)-one·xhydrate (CAS 80927-55-5)
- 2-chloropyrimidin-5-amine (CAS 56621-90-0)
- 4-chloropyrimidin-5-amine (CAS 54660-78-5)
- (2-Chloropyrimidin-4-yl)methanamine (CAS 181363-10-0)
- (2-Chloropyrimidin-5-yl)methanamine (CAS 933685-83-7)
- (4-Chloropyrimidin-2-yl)methanamine (CAS 944902-16-3)
- (6-Chloropyrimidin-4-yl)methanamine (CAS 933702-18-2)
Recommended Standards
- 5-Chloro-1H-imidazole-2-carbaldehyde (CAS 1219944-80-5)
- 4-Chloro-2h-pyran-2-one (CAS 129660-02-2)
- 1H-Pyrazole-4-carbonyl chloride (CAS 103286-53-9)
- 5-Chloro-1H-pyrazole-3-carbaldehyde (CAS 1367702-84-8)
- 6-Chloropyridine-3,4-dicarbonitrile (CAS 1166799-46-7)
- 5-(Methylsulfonyl)pyridin-2-amine (CAS 35196-11-3)
- (2S,3S)-3-((1H-imidazol-1-yl)methyl)tetrahydrofuran-2-carboxylic acid (CAS 1820580-03-7)
- 5,7-Dichloro-2-(3,5-dimethyl-1H-pyrazol-1-yl)quinolin-8-ol (CAS 355014-38-9)
- 4-Bromo-6-methoxyquinolin-7-ol (CAS 1245794-19-7)
- 4-(Morpholinomethyl)benzoic acid hydrochloride (CAS 65101-82-8)
- tert-Butyl 4-oxo-1-oxa-7-azaspiro[4.4]nonane-7-carboxylate (CAS 1823269-85-7)
- (R)-1-(3-(1,1-Difluoroethyl)phenyl)ethan-1-amine hydrochloride (CAS 2569698-48-0)
- 2-Bromo-1-(2,6-dimethyl-1H-indol-3-yl)propan-1-one (CAS 843620-91-7)
- PACAP-Related Peptide (PRP), rat (CAS 132769-35-8)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com