3-(Benzofuran-2-yl)-1-methyl-1h-pyrazole-4-carboxylic acid CAS 1152933-70-4
| CAS No. | 1152933-70-4 |
| Molecular Formula | C13H10N2O3 |
| Molecular Weight | 242.23 g/mol |
| 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.
3-(Benzofuran-2-yl)-1-methyl-1h-pyrazole-4-carboxylic acid (CAS 1152933-70-4), molecular formula C13H10N2O3 and molecular weight 242.23 g/mol, is a CATO reference standard with documented purity and traceability.
3-(Benzofuran-2-yl)-1-methyl-1h-pyrazole-4-carboxylic acid (C13H10N2O3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C13H10N2O3 |
| Molecular Weight | 242.23 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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 |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 2 |
Related Benzofuran Standards
- 3-(1-Benzofuran-3-yl)-1-methyl-1h-pyrazole-4-carboxylic acid (CAS 1197677-99-8)
- n-(Benzofuran-2-ylmethyl)-2-(1h-pyrazol-1-yl)ethan-1-amine (CAS 1307514-61-9)
- [5-(1-Benzofuran-2-yl)isoxazol-3-yl]acetic acid (CAS 1105191-74-9)
- 5-(Benzofuran-2-yl)isoxazole-3-carbohydrazide (CAS 5784-29-2)
- N-(5-(Benzofuran-2-yl)-1,3,4-oxadiazol-2-yl)acetamide (CAS 922098-84-8)
- 1-[2-(1-benzofuran-2-yl)-1,3-thiazol-4-yl]ethan-1-one (CAS 1378764-90-9)
- Benzofuran-2-yl(4-methylpiperidin-1-yl)methanone (CAS 701224-39-7)
- Benzofuran-7-boronic acid pinacol ester (CAS 1192755-14-8)
Recommended Standards
- 3-(1H-pyrazol-1-ylmethyl)-1-benzofuran-2-carboxylic acid (CAS 1152519-08-8)
- 2-(1H-1,3-Benzodiazol-1-ylmethyl)furan-3-carboxylic acid (CAS 1155072-87-9)
- 4-[5-(1-methyl-1h-pyrazol-4-yl)-1,2,4-oxadiazol-3-yl]phenol (CAS 1152513-70-6)
- 5-Amino-1-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-1H-pyrazole-4-carbonitrile (CAS 1175839-90-3)
- 2,5-Bis(3-(pyridin-4-yl)phenyl)thiazolo[5,4-d]thiazole (CAS 2615910-37-5)
- 2-Chloro-5-(difluoromethyl)-4-methylnicotinaldehyde (CAS 1806895-27-1)
- 6-(Furan-2-yl)-2-((pyridin-2-ylmethyl)thio)-4-(trifluoromethyl)nicotinonitrile (CAS 625369-84-8)
- 1-[(3-methoxyphenyl)methyl]cyclohexane-1-carboxylic acid (CAS 1226274-42-5)
- Methyl 2-(2-(2-(2-hydroxyethoxy)ethoxy)ethoxy)acetate (CAS 77303-63-0)
- 3-Methyl-1-(1,4,5,6-tetrahydro-2-pyrimidinyl)-1H-pyrazole-4,5-dione 4-(N-phenylhydrazone) (CAS 338402-59-8)
- 2-(4-Hydroxyphenyl)quinoline-4-carboxylic acid (CAS 6952-34-7)
- 6-Bromo-5-fluoro-3,4-dihydro-2H-benzo[b][1,4]oxazine (CAS 1256256-00-4)
- 3,4-Difluoro-2-iodobenzophenone (CAS 951891-68-2)
- Semaglutide impurity 68 (CAS CATO-C4X-222668)
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