4-Amino-2-chloro-5-hydroxypyrimidine CAS 943995-31-1
| CAS No. | 943995-31-1 |
| Molecular Formula | C4H4ClN3O |
| Molecular Weight | 145.55 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 145.55 g/mol gives 4-Amino-2-chloro-5-hydroxypyrimidine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 4-Amino-2-chloro-5-hydroxypyrimidine (CAS 943995-31-1), a certified reference material (molecular formula C4H4ClN3O, MW 145.55 g/mol) for analytical method development and quality control.
Based on its molecular formula C4H4ClN3O, 4-Amino-2-chloro-5-hydroxypyrimidine contains an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 145.55 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.
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 | C4H4ClN3O |
| Molecular Weight | 145.55 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.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Amino Standards
- 3-Amino-5-chloropyrazin-2(1H)-one (CAS 1303587-96-3)
- 5-Amino-2-chloropyrimidin-4-ol (CAS 1353777-47-5)
- 2-Amino-5-chloropyrimidin-4(3H)-one (CAS 89033-81-8)
- 4-Amino-1H-imidazole-5-carbonyl chloride (CAS 938443-47-1)
- 4-Amino-5-chloropyridazin-3(2H)-one (CAS 55271-58-4)
- 4-Amino-5-chloropyrimidin-2(1H)-one (CAS 2347-43-5)
- 4-Amino-6-chloro-5-hydroxypyrimidine (CAS 38953-42-3)
- 4-Amino-6-chloropyrimidin-2-ol (CAS 3289-35-8)
Recommended Standards
- 6-Chloro-4-methyl-1,3,5-triazin-2(1H)-one (CAS 1303967-52-3)
- 4-chloro-1H-pyrazole-3-carboxamide (CAS 33064-37-8)
- 3-Chloro-5-methoxy-1,2,4-triazine (CAS 1249811-78-6)
- 5-Amino-6-chloro-1H-pyrimidin-4-one (CAS 3137-60-8)
- 9-Amino-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]thieno[2,3-d]pyrimidin-4-one (CAS 1375471-62-7)
- Ethyl 4-bromo-3-(trifluoromethyl)picolinate (CAS 1805558-95-5)
- 4-[(1,1-dimethylethoxy)carbonyl](phenylmethyl)aminophenylboronic acid (CAS 693792-99-3)
- 3-(4-Nitrophenoxy)-N-[3-(trifluoromethyl)phenyl]thiophene-2-carboxamide (CAS 252026-89-4)
- (2R)-3-(((2-Aminoethoxy)(hydroxy)phosphoryl)oxy)propane-1,2-diyl (13Z,13'Z)-bis(docos-13-enoate) (CAS 904304-57-0)
- 2-(4-Fluorophenyl)-5-methylpyrazolo[1,5-a]pyrimidine-7-carboxylic acid (CAS 886503-14-6)
- 5-Methoxy-4-(oxazol-5-yl)-2-(phenylethynyl)aniline (CAS 569352-87-0)
- 3-[2-(Trifluoromethyl)-1h-benzimidazol-1-yl]propanoic acid (CAS 526205-52-7)
- 2-(6-Methoxy-4-oxoquinolin-1(4H)-yl)acetic acid (CAS 1322604-39-6)
- D-Ser39-Tirzepatide (CAS CATO-CPTD788694)
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