5-Chloropyrimidine-2,4-diamine CAS 18620-64-9
| CAS No. | 18620-64-9 |
| Molecular Formula | C4H5ClN4 |
| Molecular Weight | 144.56 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
5-Chloropyrimidine-2,4-diamine (CAS 18620-64-9), molecular formula C4H5ClN4 and molecular weight 144.56 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C4H5ClN4, 5-Chloropyrimidine-2,4-diamine contains a nitrile group, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 144.56 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).
CATO manufactures 5-Chloropyrimidine-2,4-diamine under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C4H5ClN4 |
| Molecular Weight | 144.56 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.) | 1962 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Chloropyrimidine Standards
- 2-Chloropyrimidine-4,5-diamine (CAS 14631-08-4)
- 4-Chloropyrimidine-2,5-diamine (CAS 14631-09-5)
- 2-Chloropyrimidine-4,6-diamine (CAS 53557-61-2)
- 2-Chloropyrimidine-4-methanol (CAS 34953-87-2)
- 4-chloropyrimidine-2-carbonitrile (CAS 898044-48-9)
- 6-chloropyrimidine-2,4-diol (CAS 107577-09-3)
- 2-Chloropyrimidine-4-carbaldehyde (CAS 944901-22-8)
- 4-Chloropyrimidine-5-carbaldehyde (CAS 933703-03-8)
Recommended Standards
- 6-Chloro-4-methylpyridazin-3-ol (CAS 1849390-26-6)
- 4-Chloro-1-methyl-1h-imidazole-5-carbaldehyde (CAS 193804-98-7)
- 6-Chloro-4-methylpyridazin-3(2H)-one (CAS 1834-27-1)
- (4-Chloropyrimidin-5-yl)methanol (CAS 389799-45-5)
- tert-Butyl 3-(2-methoxyethyl)piperazine-1-carboxylate (CAS 1359656-07-7)
- Methyl 2,3,4-trifluoro-5-nitrobenzoate (CAS 918321-24-1)
- 2-Amino-3-(5-methyl-2-thienyl)propionic Acid (CAS 74348-36-0)
- 2-Ethyl-6-methylpyridin-3-amine (CAS 1344663-48-4)
- (2-Methyl-2H-pyrazol-3-ylmethyl)-(1-phenyl-ethyl)-amine (CAS 1009701-20-5)
- 3-(Cyclopropylmethoxy)-4-methoxybenzoic acid (CAS 159783-28-5)
- CAS 31105-76-7 (CAS 31105-76-7)
- 4-(Benzo[d][1,3]dioxol-5-yl)-6-(trifluoromethyl)pyrimidine-2-thiol (CAS 505053-95-2)
- 2’-Chloro-5’-nitroacetophenone (CAS 23082-50-0)
- Endo-[Glu]31-Liraglutide (CAS CATO-C4X-199234)
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