5-Oxo-1-(4-sulfophenyl)-2,5-dihydro-1H-pyrazole-3-carboxylic acid CAS 51307-71-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 51307-71-2 |
| Molecular Formula | C10H8N2O6S |
| Molecular Weight | 284.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-Oxo-1-(4-sulfophenyl)-2,5-dihydro-1H-pyrazole-3-carboxylic acid (CAS 51307-71-2), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C10H8N2O6S. Molecular weight: 284.25 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C10H8N2O6S |
| Molecular Weight | 284.25 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Oxo Standards
- 5-Oxo-1-(4-Sulfophenyl)-4,5-Dihydro-1H-Pyrazole-3-Carboxylic Acid (CAS 118-47-8)
- 1-(2-Methyl-4-sulfophenyl)-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylic acid (CAS 67939-25-7)
- 8(p-Sulfophenyl)theophylline (CAS 80206-91-3)
- 2-(4-sulfophenyl)acetic acid (CAS 153661-28-0)
- 3-[Ethyl[(4-sulfophenyl)methyl]amino]benzenesulfonic Acid (CAS 6268-04-8)
- 4,4'-(((4-Sulfophenyl)azanediyl)bis(methylene))dibenzoic acid (CAS 2105860-95-3)
- 4,7-Bis(4-sulfophenyl)-1,10-phenanthroline disodium salt (CAS 53744-42-6)
- 5'-(4-Sulfophenyl)-[1,1':3',1''-terphenyl]-4,4''-disulfonic acid (CAS 343821-13-6)
Recommended Standards
- 5-Hydroxy-1-(4-sulfophenyl)-1H-pyrazole-3-carboxylic acid (CAS 21951-33-7)
- N-(4-Fluorophenyl)-6-nitroquinazolin-4-amine (CAS 691385-33-8)
- 4-Oxo-2,6-diphenyl-4H-4lambda*5*-[1,4]oxaphosphinin-4-ol (CAS 56153-45-8)
- 2-Hydroxypropyl-beta-Cyclodextrin (CAS 107745-73-3)
- 6-Bromo-2-(methylthio)oxazolo[4,5-b]pyridine (CAS 586409-04-3)
- (3-(4-Methoxyphenoxy)phenyl)methanaminehydrochloride (CAS 1170566-12-7)
- (S)-N-((1-(2-Aminoacetyl)pyrrolidin-2-yl)methyl)-N-ethylacetamide (CAS 1354008-92-6)
- 1-Amino-3-(phosphonomethyl)cyclobutanecarboxylic acid (CAS 375858-31-4)
- 4,6-difluoro-1H-imidazo[4,5-c]pyridine (CAS 60186-30-3)
- Neuropeptide Y (free acid) (human, rat) trifluoroacetate salt (CAS 99575-89-0)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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