5-Hydroxy-3-methyl-1-phenyl-1H-pyrazole-4-carbonitrile CAS 139347-67-4
| CAS No. | 139347-67-4 |
| Molecular Formula | C11H9N3O |
| Molecular Weight | 199.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-Hydroxy-3-methyl-1-phenyl-1H-pyrazole-4-carbonitrile (CAS 139347-67-4), a certified reference material (molecular formula C11H9N3O, MW 199.21 g/mol) for analytical method development and quality control.
Based on its molecular formula C11H9N3O, 5-Hydroxy-3-methyl-1-phenyl-1H-pyrazole-4-carbonitrile contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 199.21 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
As a certified reference material (CRM), 5-Hydroxy-3-methyl-1-phenyl-1H-pyrazole-4-carbonitrile meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C11H9N3O |
| Molecular Weight | 199.21 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 3 |
Related Hydroxy Standards
- 2-Hydroxy-3-(pyridin-4-yl)benzaldehyde (CAS 1202677-86-8)
- 1-(2-Hydroxy-2-methylpropyl)-5-methyl-1h-1,2,3-triazole-4-carboxylic acid (CAS 1249257-62-2)
- 2-(R)-Hydroxy-4-oxo-4-phenylbutyric-d (CAS 1286934-16-4)
- 5-Hydroxy-1-methyl-3-phenyl-1h-pyrazole-4-carbonitrile (CAS 139347-62-9)
- 2-Hydroxy-6-phenylnicotinaldehyde (CAS 1501955-97-0)
- (2-Hydroxy-pyridin-3-yl)-phenyl-methanone (CAS 27039-12-9)
- 2-Hydroxy-5-(pyridin-3-yl)benzaldehyde (CAS 85633-41-6)
- 2-Hydroxy-5-(pyridin-4-yl)benzaldehyde (CAS 342037-21-2)
Recommended Standards
- 3-nitro-6H-1,6-naphthyridin-5-one (CAS 1408075-65-9)
- 1,2-Dihydrocyclobuta[b]quinoline-8-carboxylic acid (CAS 13848-02-7)
- 2-(Pyridin-2-yloxy)benzaldehyde (CAS 141580-71-4)
- [2,3'-Bipyridine]-2'-carboxamide (CAS 1379361-24-6)
- 8-(((3,4,5-Trimethoxyphenyl)amino)methyl)-9H-purine-2,6-diamine (CAS 156698-69-0)
- 2-(4-(Difluoromethyl)-3-iodo-6-methylpyridin-2-yl)acetic acid (CAS 1806020-83-6)
- 4,8-Dihydroxy-6H-benzo[c]chromen-6-one (CAS 1601489-88-6)
- 3-((Tetrahydrothiophen-3-yl)amino)benzonitrile (CAS 1019569-20-0)
- Undecane-6-sulfonyl chloride (CAS 1249171-42-3)
- 3-Methoxy-2-methylspiro[3.3]Heptan-1-amine hydrochloride (CAS 1443979-49-4)
- 2-((Allyloxy)methyl)-1-methoxy-4-nitrobenzene (CAS 1312603-37-4)
- 2-(2-Bromo-5-fluorophenoxy)acetic acid (CAS 874804-04-3)
- 4-Chloro-6-methoxynicotinic acid (CAS 1060806-60-1)
- Tirzepatide Impurity 45 (CAS CATO-C4X-324045)
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