5-(Thiophen-3-yl)-1h-pyrazole-3-carboxylic acid CAS 1029108-69-7
| CAS No. | 1029108-69-7 |
| Molecular Formula | C8H6N2O2S |
| Molecular Weight | 194.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 194.21 g/mol gives 5-(Thiophen-3-yl)-1h-pyrazole-3-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-(Thiophen-3-yl)-1h-pyrazole-3-carboxylic acid (CAS 1029108-69-7), molecular formula C8H6N2O2S and molecular weight 194.21 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 5-(Thiophen-3-yl)-1h-pyrazole-3-carboxylic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 194.21 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 5-(Thiophen-3-yl)-1h-pyrazole-3-carboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H6N2O2S |
| Molecular Weight | 194.21 g/mol |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Thiophen Standards
- 5-(Thiophen-2-yl)-1,2-oxazole-3-carboxamide (CAS 1019656-18-8)
- 5-(Thiophen-2-yl)pyrimidine-2,4-diol (CAS 109299-90-3)
- 5-(Thiophen-3-yl)pyrimidine-2,4-diol (CAS 109428-23-1)
- 4-(Thiophen-3-yl)-1H-pyrazole-3-carboxylic acid (CAS 117784-24-4)
- 3-(Thiophen-3-yl)-1h-pyrazole-4-carboxylic acid (CAS 1249642-34-9)
- 3-(Thiophen-2-yl)furan-2-carboxylic acid (CAS 875160-15-9)
- 5-(Thiophen-2-yl)-1h-pyrazole-4-carboxylic acid (CAS 879996-80-2)
- 5-(Thiophen-2-yl)-4H-pyrazole-3-carboxylic acid (CAS 904813-23-6)
Recommended Standards
- 3-Methyl-1-(thiazol-2-yl)-1H-pyrrole-2,5-dione (CAS 1022803-10-6)
- 4-(3-Fluoro-2-methylphenyl)-4,5-dihydrooxazol-2-amine (CAS 1043498-53-8)
- 1-(5-Fluoropyridin-2-yl)piperidin-4-one (CAS 1057263-72-5)
- N-(2-oxo-2,3-Dihydro-4-pyrimidinyl)sulfuric diamide (CAS 101910-06-9)
- 2-(Benzyloxy)isonicotinic Acid (CAS 467236-25-5)
- Clomiphene Impurity 1 (CAS 73404-00-9)
- (R)-3-aminooxetan-2-one (CAS 149572-95-2)
- 3-[2-(3,4-Dichlorophenoxy)ethyl]piperidinehydrochloride (CAS 1220037-25-1)
- 1-(Ethoxymethyl)-3,5-dimethyl-1h-pyrazol-4-amine (CAS 1006436-30-1)
- Ici 153110 (CAS 87164-90-7)
- 2-(Difluoromethyl)-5-nitro-6-(trifluoromethoxy)pyridine-3-carbonyl chloride (CAS 1805090-82-7)
- 7-(Trifluoromethyl)-3,4-dihydroquinoxalin-2(1H)-one (CAS 716-81-4)
- 1-(Benzofuran-3-yl)-N-methylmethanamine hydrochloride (CAS 1401425-23-7)
- His-Cyclic-Semaglutide (CAS CATO-C4X-2226182)
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