1-(2-Methyl-4-sulfophenyl)-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylic acid CAS 67939-25-7
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 67939-25-7 |
| Molecular Formula | C11H10N2O6S |
| Molecular Weight | 298.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-(2-Methyl-4-sulfophenyl)-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylic acid (CAS 67939-25-7) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C11H10N2O6S. Molecular weight: 298.27 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C11H10N2O6S |
| Molecular Weight | 298.27 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.) | 1976 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 5-Oxo-1-(4-sulfophenyl)-2,5-dihydro-1H-pyrazole-3-carboxylic acid (CAS 51307-71-2)
- 5-Oxo-1-(4-Sulfophenyl)-4,5-Dihydro-1H-Pyrazole-3-Carboxylic Acid (CAS 118-47-8)
- 8(p-Sulfophenyl)theophylline (CAS 80206-91-3)
- 3-[Ethyl[(4-sulfophenyl)methyl]amino]benzenesulfonic Acid (CAS 6268-04-8)
- 2-(4-sulfophenyl)acetic acid (CAS 153661-28-0)
- 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
- (Furan-2-yl(hydroxy)methyl)diphenylphosphine oxide (CAS 371958-83-7)
- 1-(4-{[5-(2-fluorophenyl)-1,2,4-oxadiazol-3-yl]oxy}phenyl)ethan-1-one (CAS 866150-25-6)
- 1-(6-(4-Fluorophenyl)-2-methylpyrimidin-4-yl)-1H-pyrazole-3-carboxylic acid (CAS 1707735-63-4)
- 3-((2-Chloro-6-fluorobenzyl)oxy)-1-(4-chlorobenzyl)-2-methylpyridin-4(1H)-one (CAS 303144-70-9)
- 4-Bromo-N-(4-methylpyridin-2-yl)benzenesulfonamide (CAS 295345-81-2)
- trans-3-(3,4-Dimethoxyphenoxy)cyclobutanamine hydrochloride (CAS 1630906-76-1)
- 3,3-Diphenylacrylaldehyde (CAS 13702-35-7)
- 1-Benzyl-4-methyl-1h-pyrazol-3-amine (CAS 1174838-25-5)
- 2,4,6-Trichloro-3-nitropyridine (CAS 60186-13-2)
- Neuropeptide FF (CAS 99566-27-5)
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