1,2-Dihydro-3H-pyrazolo[4,3-c]pyridin-3-one hydrochloride CAS 3268-69-7
| CAS No. | 3268-69-7 |
| Molecular Formula | C6H5N3O |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 171.58 g/mol gives 1,2-Dihydro-3H-pyrazolo[4,3-c]pyridin-3-one hydrochloride distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1,2-Dihydro-3H-pyrazolo[4,3-c]pyridin-3-one hydrochloride (CAS 3268-69-7) is a high-purity analytical reference standard with the molecular formula C6H5N3OHCl and a molecular weight of 171.58 g/mol.
Owing to an amide group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 1,2-Dihydro-3H-pyrazolo[4,3-c]pyridin-3-one hydrochloride is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 171.58 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.
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 | C6H5N3O HCl |
| Molecular Weight | 171.58 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
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- 3-(3,4-Dihydro-2h-benzo[b][1,4]dioxepin-7-yl)propan-1-ol (CAS 1000540-71-5)
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Recommended Standards
- 3-Bromo-1-methyl-1H-indazol-4-ol (CAS 1781821-06-4)
- 2-((5-Chlorobenzo[d]isoxazol-3-yl)oxy)ethyl acetate (CAS 143869-62-9)
- Cycloheptyl(3,4-difluorophenyl)methanol (CAS 1443346-44-8)
- n4,n4-bis(2-methoxyethyl)pyrimidine-4,6-diamine (CAS 436851-72-8)
- Methyl 3-(piperidin-3-yloxy)benzoate hydrochloride (CAS 1185297-89-5)
- tert-Butyl 2-bromo-1H-indole-1-carboxylate (CAS 249608-77-3)
- Clodinafop Propargyl (CAS 105512-06-9)
- 4-Amino-6-(2-chlorophenyl)-1,6-dihydro-1,3,5-triazine-2-thiol (CAS 1142207-39-3)
- 1-(2-Chloro-6-nitrophenyl)azepane (CAS 40832-89-1)
- 141801-03-8 IL-1 Receptor Peptide (human) (CAS 141801-03-8)
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