5-bromo-1H-pyrazolo[4,3-d]pyrimidine-3-carboxylic acid CAS 1368148-48-4
| CAS No. | 1368148-48-4 |
| Molecular Formula | C6H11BrN4O2 |
| Molecular Weight | 251.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, 5-bromo-1H-pyrazolo[4,3-d]pyrimidine-3-carboxylic acid is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 251.08 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.
5-bromo-1H-pyrazolo[4,3-d]pyrimidine-3-carboxylic acid (CAS 1368148-48-4) is a high-purity analytical reference standard with the molecular formula C6H11BrN4O2 and a molecular weight of 251.08 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5-bromo-1H-pyrazolo[4,3-d]pyrimidine-3-carboxylic acid 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 | C6H11BrN4O2 |
| Molecular Weight | 251.08 g/mol |
| Appearance | 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 sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 4 |
Related bromo Standards
- 4-Bromo-2-naphthoic Acid (CAS 1013-80-5)
- 5-Bromo-2-naphthoic Acid (CAS 1013-83-8)
- 2-Bromo-3-(pyridin-2-yloxy)pyridine (CAS 1065484-62-9)
- 5-Bromo-2h-[1,2'-bipyridin]-2-one (CAS 109822-11-9)
- 4-Bromo-2-(1h-imidazol-1-yl)benzaldehyde (CAS 1099630-02-0)
- 4-Bromo-2-(1h-pyrazol-1-yl)benzaldehyde (CAS 1152645-08-3)
- (4-Bromo-1H-pyrazol-1-yl)(phenyl)methanone (CAS 116228-39-8)
- 4-(4-Bromo-1H-pyrazol-1-yl)benzaldehyde (CAS 1174064-63-1)
Recommended Standards
- 7-bromo-1H-pyrazolo[4,3-d]pyrimidine-3-carboxylic acid (CAS 1368024-36-5)
- 5-Bromo-2-(pyridin-4-yl)pyrimidin-4-amine (CAS 1381941-03-2)
- 3-(4-Bromo-1h-pyrazol-1-yl)benzaldehyde (CAS 1341697-43-5)
- 6-(2-Bromophenyl)pyridazin-3-ol (CAS 138976-17-7)
- Methyl 2-(2,4-dichlorobenzamido)benzoate (CAS 82525-34-6)
- (3-Bromo-4-((tetrahydro-2H-pyran-4-yl)methoxy)phenyl)methanamine (CAS 1408657-52-2)
- 4-Iodoanisole (CAS 696-62-8)
- 3'-Chloro-[1,1'-biphenyl]-2-carbaldehyde (CAS 216443-25-3)
- Tert-butyl ((1R,2S)-2-(aminomethyl)cyclohexyl)carbamate (CAS 1259277-49-0)
- Baclofen Impurity 7 (CAS 5045-65-8)
- N-(5-(5-Chlorobenzo[d]oxazol-2-yl)-2-methylphenyl)-3-nitrobenzamide (CAS 313953-44-5)
- Methyl 7-bromo-8-fluoro-2H-chromene-3-carboxylate (CAS 2035422-19-4)
- 2-Bromo-3,4,5,6-tetrafluorophenol (CAS 1998-62-5)
- Des-Gly29,30-Tirzepatide (CAS CATO-CPTD788944)
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