2,5-Dichloro-4-iodo-pyrimidine CAS 1137576-41-0
| CAS No. | 1137576-41-0 |
| Molecular Formula | C4HCl2IN2 |
| Molecular Weight | 274.87 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 274.87 g/mol gives 2,5-Dichloro-4-iodo-pyrimidine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2,5-Dichloro-4-iodo-pyrimidine (CAS 1137576-41-0), molecular formula C4HCl2IN2 and molecular weight 274.87 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrile group, chlorine/iodine substitution, 2,5-Dichloro-4-iodo-pyrimidine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 274.87 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C4HCl2IN2 |
| Molecular Weight | 274.87 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.) | 1989 |
| Halogen Content | Cl/I-containing |
| Nitrogen Atoms | 2 |
Related Dichloro Standards
- 2,4-Dichloro-6-iodopyrimidine (CAS 1062608-49-4)
- 4,6-Dichloro-5-iodopyrimidine (CAS 1137576-38-5)
- 2,5-Dichloro-3-iodopyrazine (CAS 1174517-52-2)
- 4,6-Dichloro-2-iodopyrimidine (CAS 1266105-16-1)
- 3,6-Dichloro-4-iodopyridazine (CAS 130825-13-7)
- 3,5-Dichloro-2-iodopyrazine (CAS 136866-30-3)
- 4,5-Dichloro-6-iodopyrimidine (CAS 1803779-02-3)
- 4,5-Dichloro-2-iodopyrimidine (CAS 1805483-56-0)
Recommended Standards
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- 4-(3-Fluorophenyl)-1,2,3,6-tetrahydropyridine hydrochloride (CAS 80120-00-9)
- 2-Methyl-1-(1-methyl-1H-pyrazol-4-yl)pentane-1,3-dione (CAS 1007519-59-6)
- 6-Chloro-3-methylquinoline (CAS 97041-62-8)
- (1S,3aR,6aS)-2-nitrosooctahydrocyclopenta[c]pyrrole-1-carboxylic acid (CAS CATO-C3D-263001)
- 122852-78-2 1H-Pyrido[4,3-b]indol-1-one, 2,3,4,5-tetrahydro- (CAS 122852-78-2)
- N-Methyl-N-propyl-1,3-thiazolidine-4-carboxamide (CAS 1190416-54-6)
- 4-(3-Fluorophenyl)pyridin-2-ol (CAS 1159817-41-0)
- (R)-2-Amino-N-(1-methylpyrrolidin-3-yl)acetamide (CAS 1353992-72-9)
- 2-(Pyridin-3-yl)quinazolin-4-amine (CAS 273408-90-5)
- Semaglutide impurity 256 (CAS CATO-C4X-2226256)
Why CATO?
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