4-Chloro-7-fluoro-5H-pyrrolo[3,2-d]pyrimidine CAS 1311275-30-5
| CAS No. | 1311275-30-5 |
| Molecular Formula | C6H3ClFN3 |
| Molecular Weight | 171.56 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Chloro-7-fluoro-5H-pyrrolo[3,2-d]pyrimidine (CAS 1311275-30-5) is a high-purity analytical reference standard with the molecular formula C6H3ClFN3 and a molecular weight of 171.56 g/mol.
Based on its molecular formula C6H3ClFN3, 4-Chloro-7-fluoro-5H-pyrrolo[3,2-d]pyrimidine contains a nitrile group, fluorine/chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 171.56 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C6H3ClFN3 |
| Molecular Weight | 171.56 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 3 |
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Recommended Standards
- 4-azido-1-chloro-2-fluorobenzene (CAS 1251142-19-4)
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- 2-Chloro-7-fluorobenzoxazole (CAS 153403-52-2)
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- 3-Ethynylbenzene-1-sulfonyl fluoride (CAS 2138286-81-2)
- N-[(4Z)-3-Ethyl-2-oxo-1,2,3,4-tetrahydroquinazolin-4-ylidene]-4-methylbenzamide (CAS 478032-91-6)
- 2,4-Dimethoxy-6-(pyren-1-yl)-1,3,5-triazine (CAS 3271-22-5)
- 24426-14-0 N~1~-(2-Aminoethyl)-N~1~-ethylethane-1,2-diamine DTXSID80556272 (CAS 24426-14-0)
- Tirzepatide Impurity 14 (CAS CATO-C4X-324014)
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