2-(4-amino-3,5-dimethyl-1H-pyrazol-1-yl)ethan-1-ol CAS 5920-56-9
| CAS No. | 5920-56-9 |
| Molecular Formula | C18H11N5O2S |
| Molecular Weight | 361.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies 2-(4-amino-3,5-dimethyl-1H-pyrazol-1-yl)ethan-1-ol (CAS 5920-56-9), a certified reference material (molecular formula C18H11N5O2S, MW 361.38 g/mol) for analytical method development and quality control.
Structurally, 2-(4-amino-3,5-dimethyl-1H-pyrazol-1-yl)ethan-1-ol (C18H11N5O2S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 16.0, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 361.38 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C18H11N5O2S |
| Molecular Weight | 361.38 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |
Related amino Standards
- 2-Amino-5-((2-(sulfooxy)ethyl)sulfonyl)benzenesulfonic acid (CAS 42986-22-1)
- 2-Amino-6-(3,4-dimethoxyphenyl)-4-(4-methoxyphenyl)pyridine-3-carbonitrile (CAS 235100-74-0)
- 2-(4-Amino-2,5-dimethylphenyl)-6-nitro-1H-benzo[de]isoquinoline-1,3(2H)-dione (CAS 831227-52-2)
- 4-Amino-6-(2-methoxyphenyl)-3-phenyl-3,7-dihydropyrimido[5,4-d]pyrimidine-2,8-dione (CAS 499197-57-8)
- 2-Amino-5-(thiophen-2-yl)-5-[(3,4,5-trimethoxyphenyl)methyl]-4,5-dihydro-1H-imidazol-4-one (CAS 1354922-66-9)
- (3-Amino-6-ethyl-5-methyl-4-(trifluoromethyl)thieno[2,3-b]pyridine-2-carbonyl)glycine (CAS 923553-63-3)
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Recommended Standards
- Levofloxacin (CAS 100986-85-4)
- 5-{[(4-methylphenyl)methyl]sulfanyl}-3-phenyl-6-(trifluoromethyl)-1,2,4-triazine (CAS 478048-12-3)
- Ofloxacin (CAS 82419-36-1)
- 6-Methyl-3-(4-methylphenyl)-5-{[3-(trifluoromethyl)phenyl]sulfanyl}-1,2,4-triazine (CAS 339013-39-7)
- 3-(5-Methylpyridin-2-yl)propanoic acid (CAS 1256786-83-0)
- Ethyl 2-((4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)methyl)acrylate (CAS 191658-69-2)
- 2-(Pyridin-3-yl)oxazolidine (CAS 876508-75-7)
- Methyl-d3 Acetate (CAS 24704-57-2)
- 5-Cyclopropyl-1-methyl-1H-pyrazole-4-carbaldehyde (CAS 1215295-85-4)
- 4-(2-Fluorophenoxymethyl)benzene-1-carboximidamide hydrochloride (CAS 1221724-73-7)
- Prolylleucine (CAS 61596-47-2)
- Methyl 7-(4-methylbenzenesulfonyl)-7H-pyrrolo[2,3-d]pyrimidine-4-carboxylate (CAS 1261365-63-2)
- 1-(4-Amino-3,5-dichloro-phenyl)-2-tert-butyl-d9-amino-ethanone (CAS 129138-59-6)
- Semaglutide impurity 64 (CAS CATO-C4X-222664)
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