5-Ethyl-1-phenyl-1H-pyrazol-4-ol CAS 89193-20-4
| CAS No. | 89193-20-4 |
| Molecular Formula | C11H12N2O |
| Molecular Weight | 188.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5-Ethyl-1-phenyl-1H-pyrazol-4-ol.
5-Ethyl-1-phenyl-1H-pyrazol-4-ol (CAS 89193-20-4) is a high-purity analytical reference standard with the molecular formula C11H12N2O and a molecular weight of 188.23 g/mol.
5-Ethyl-1-phenyl-1H-pyrazol-4-ol (C11H12N2O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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-Ethyl-1-phenyl-1H-pyrazol-4-ol 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 | C11H12N2O |
| Molecular Weight | 188.23 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 2 |
Recommended Standards
- 5-Cyanothiophene-3-sulfonamide (CAS 2657625-52-8)
- 5-ethyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one (CAS 92753-34-9)
- 5-Cyanothiophene-2-sulfonamide (CAS 519055-65-3)
- 5-Ethyl-3-(p-tolyl)-1,2,4-oxadiazole (CAS 81386-31-4)
- Carbonylbis(4,1-phenylene) diacetate (CAS 6290-82-0)
- (6-(3,3,3-Trifluoropropyl)pyridin-3-yl)methanamine (CAS 1373916-14-3)
- 1-(3-Bromobut-3-en-1-yl)-4-methoxybenzene (CAS 731773-20-9)
- 4-chloro-1-(pentan-3-yl)-1H-pyrazolo[3,4-d]pyrimidine (CAS 21253-91-8)
- Methyl 2-((tert-butyldimethylsilyl)oxy)-2-(dimethoxyphosphoryl)acetate (CAS 78186-95-5)
- 3-Chloro-5-methyl-1-phenethyl-1H-1,2,4-triazole hydrochloride (CAS 1279219-14-5)
- (4-(Aminomethyl)phenyl)(azocan-1-yl)methanone (CAS 923238-46-4)
- 2-((Dimethylamino)methyl)pyridin-4-amine (CAS 1423117-47-8)
- 2-amino-1,1-dicyclopropylethan-1-ol (CAS 960248-09-3)
- [D-His]-Semaglutide B (x TFA Salt) (CAS CATO-C4X-2226117)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com