4,5-Diamino-6-chloropyrimidine CAS 4316-98-7
| CAS No. | 4316-98-7 |
| Molecular Formula | C4H5ClN4 |
| Molecular Weight | 144.56 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 144.56 g/mol gives 4,5-Diamino-6-chloropyrimidine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4,5-Diamino-6-chloropyrimidine (CAS 4316-98-7), molecular formula C4H5ClN4 and molecular weight 144.56 g/mol, is a CATO reference standard with documented purity and traceability.
4,5-Diamino-6-chloropyrimidine (C4H5ClN4) contains a nitrile group, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
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 | 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.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Diamino Standards
- 5,6-Diamino-2,4-dihydroxypyrimidine HCl salt (CAS 3240-72-0)
- 1,2-Diamino-3,4-difluorobenzene (CAS 153505-39-6)
- 1,3-Diamino-2,5-difluorobenzene (CAS 25170-73-4)
- 1,4-Diamino-2,5-difluorobenzene (CAS 698-52-2)
- 2,6-Diamino-5-fluoropyrimidin-4(1H)-one (CAS 63436-09-9)
- 2,6-Diamino-3,5-difluoropyridine (CAS 247069-27-8)
- 2,4-Diamino-3,5-difluoropyridine (CAS 2027524-18-9)
- Ethyl 2,3-diamino-3-iminopropanoate (CAS 757135-66-3)
Recommended Standards
- 3-Methylfuran-2-carbonyl chloride (CAS 22601-06-5)
- 4-AMino-2-chloropyridin-1-ium-1-olate (CAS 802844-83-3)
- 3-Chloropyridazine-4,5-diamine (CAS 78460-97-6)
- 4-Amino-3-chloropyridin-2-ol (CAS 55290-73-8)
- 4-methoxy-1H-indazole-3-carbaldehyde (CAS 898747-12-1)
- 5-(4-Isopropoxybenzoyl)furan-2-carboxylic acid (CAS 1399658-52-6)
- 2-Methoxy-N-(tetrahydro-2H-pyran-4-yl)acetamide (CAS 1186047-29-9)
- 2-Bromo-3-chloro-5-(difluoromethyl)pyridine (CAS 1335052-24-8)
- (S)-Oxazolidine-4-carboxylic acid hydrochloride (CAS 162285-30-5)
- Noradrenaline Trifluoroacetate EP Impurity G (CAS 13062-58-3(Free Base))
- 4-BRomo-6-methoxybenzene-1,3-disulfonyl dichloride (CAS 1203027-65-9)
- Tert-Butylbenzene (CAS 98-06-6)
- Ethyl 5-(4-chlorophenyl)-2H-pyrazole-3-carboxylate (CAS 595610-40-5)
- Tirzepatide Impurity 33 (CAS CATO-C4X-324033)
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