4,6-Dichloro-7H-pyrrolo[2,3-d]pyrimidine CAS 97337-32-1
| CAS No. | 97337-32-1 |
| Molecular Formula | C6H3Cl2N3 |
| Molecular Weight | 188.01 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4,6-Dichloro-7H-pyrrolo[2,3-d]pyrimidine (CAS 97337-32-1), molecular formula C6H3Cl2N3 and molecular weight 188.01 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrile group, chlorine substitution, an aromatic ring system, 4,6-Dichloro-7H-pyrrolo[2,3-d]pyrimidine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 188.01 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
As a certified reference material (CRM), 4,6-Dichloro-7H-pyrrolo[2,3-d]pyrimidine meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C6H3Cl2N3 |
| Molecular Weight | 188.01 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.) | 1984 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Dichloro Standards
- 3,4-Dichloro-2-hydroxybenzonitrile (CAS 115661-18-2)
- 5,6-Dichloro-1,3-benzoxazole (CAS 1267335-10-3)
- 3,5-Dichloro-1H-pyrazolo[4,3-b]pyridine (CAS 1310680-12-6)
- 2,4-Dichloro-3H-pyrrolo[3,2-d]pyrimidine (CAS 1310680-17-1)
- 3,6-Dichloro-1H-pyrazolo[3,4-b]pyridine (CAS 1352893-80-1)
- 6,7-Dichloro-3H-imidazo[4,5-b]pyridine (CAS 1378594-79-6)
- 3,6-Dichloro-1H-pyrazolo[4,3-c]pyridine (CAS 1431721-01-5)
- 4,5-Dichloro-2-hydroxybenzonitrile (CAS 1541259-78-2)
Recommended Standards
- 4,6-Dichloro-2-methylpyrimidine-5-carbonitrile (CAS 76574-36-2)
- 4,6-Dichlorofuro[2,3-b]pyridine (CAS 2089320-64-7)
- 4,5-Dichloropyrrolo[2,1-f][1,2,4]triazine (CAS 888720-61-4)
- 4,6-Dichloroimidazo[4,5-c]pyridine (CAS 2589-12-0)
- Fmoc-D-Lys(Mtt)-OH (CAS 198544-94-4)
- N-(4-(N-((4-Methyl-2-(o-tolyl)thiazol-5-yl)methyl)sulfamoyl)phenyl)butyramide (CAS 1448043-58-0)
- Kojic Acid-13C6 (CAS CATO-CCFD201548)
- 13708-92-4 (CAS 13708-92-4)
- 2-Methyl-1-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2H-isoindole (CAS 1149352-13-5)
- Levobunolol HCl (CAS 27912-14-7)
- 2-Aminodiphenylamine (CAS 534-85-0)
- 4H,5H,6H,7H-Thieno[2,3-c]pyridine-7-carboxylic acid hydrochloride (CAS 2059932-32-8)
- MIL-124-In (CAS 2138292-58-5)
- Semaglutide impound 212 (CAS CATO-C4X-2226212)
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