4-Chloro-2,5-difluoropyrimidine CAS 99429-06-8
| CAS No. | 99429-06-8 |
| Molecular Formula | C4HClF2N2 |
| Molecular Weight | 150.51 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Chloro-2,5-difluoropyrimidine (CAS 99429-06-8), molecular formula C4HClF2N2 and molecular weight 150.51 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C4HClF2N2, 4-Chloro-2,5-difluoropyrimidine contains a nitrile group, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 150.51 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 4-Chloro-2,5-difluoropyrimidine 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 | C4HClF2N2 |
| Molecular Weight | 150.51 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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.) | 1985 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 2-Chloro-4,5-difluoropyrimidine (CAS 894791-89-0)
- 2-Chloro-4,6-difluoropyrimidine (CAS 38953-30-9)
- 4-Chloro-5,6-difluoropyrimidine (CAS 220518-09-2)
- 5-Chloro-2,4-difluoropyrimidine (CAS 25151-07-9)
- 3-Chloro-1,1,1,3-tetrafluoropropane (CAS 149329-29-3)
- Ethyl 2-chloro-3-hydroxyacrylate (CAS 10229-12-6)
- 4-chloro-1H-imidazole-2-carboxylic acid (CAS 1824084-44-7)
- 2-Chloro-N-(methylcarbamoyl)acetamide (CAS 4791-22-4)
Recommended Standards
- 4-Chlorobenzene-1,3-diol-1,2,3,4,5,6-13C6 (CAS 953390-32-4)
- Cadmium fluoride, Puratronic®; 99.99 % (metals basis)" (CAS 7790-79-6)
- 2-Chlorobut-2-enedioic acid (CAS 19071-21-7)
- Sm Standard Solution (CAS 7440-19-9)
- Methyl 4-(3-(4-chlorophenyl)ureido)-2-methoxybenzoate (CAS 477889-66-0)
- Methyl 2-(isoquinolin-5-yl)acetate (CAS 395074-84-7)
- Methyl 5-amino-4-hydroxy-2-methylbenzoate (CAS 1163281-03-5)
- 3-Oxo-4-aza-5-androstene-17β-carboxylic acid (CAS 103335-54-2)
- 2-(2-(2-(Trifluoromethyl)-1H-benzo[d]imidazol-1-yl)propanamido)benzoic acid (CAS 692732-72-2)
- 3-(2-Chloro-5-nitropyrimidin-4-yl)pentane-2,4-dione (CAS 97821-68-6)
- (3-Methoxy-5-(trifluoromethyl)pyridin-2-yl)methanol (CAS 1806548-35-5)
- 5-O-(tert-Butyldiphenylsilyl)-2,3-isopropylidene-D-ribonolactone (CAS 130222-84-3)
- tert-Butyl 4-hydroxy-4-{[4-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl]methyl}piperidine-1-carboxylate (CAS 877399-39-8)
- Tau Peptide (301-315) trifluoroacetate salt (CAS 330456-48-9)
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