2,4-Dichloro-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine hydrochloride(1:x) CAS 635698-30-5
| CAS No. | 635698-30-5 |
| Molecular Formula | C7H7Cl2N3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2,4-Dichloro-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine hydrochloride(1:x) (CAS 635698-30-5), molecular formula C7H7Cl2N3HCl and molecular weight 240.51 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 2,4-Dichloro-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine hydrochloride(1:x) (C7H7Cl2N3HCl) is characterized by a nitrile group, chlorine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 2,4-Dichloro-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine hydrochloride(1:x) 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 | C7H7Cl2N3 HCl |
| Molecular Weight | 240.51 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 |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
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Recommended Standards
- 9-Hydroxy-9-methyl-3-thia-7-azabicyclo[3.3.1]Nonane 3,3-dioxide (CAS 1783728-92-6)
- 2-Bromoethyl Methyl Sulfone (CAS 16523-02-7)
- 5-(4-Chlorophenoxy)-3-(3-(trifluoromethyl)phenyl)-1,2,4-triazine-6-carbonitrile (CAS 921620-32-8)
- Dihydromethysticin (CAS 3155-57-5)
- 6-Hydroxybenzothiazol-2(3H)-one (CAS 80567-65-3)
- 2H-Pyrazolo[4,3-d]pyrimidine-3-carbonitrile, 5-chloro- (CAS 2092193-29-6)
- 4-Cyclopropoxy-2-(methylthio)pyridine-3-sulfonamide (CAS 1243453-90-8)
- 3,3-Difluoro-1-methylcyclopentane-1-carboxylic acid (CAS 1785125-34-9)
- 3-Acetyl-4-hydroxy-7,8-dimethyl-2(1H)-quinolinone (CAS 63768-46-7)
- Integrin Binding Peptide trifluoroacetate salt (CAS 278792-07-7)
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