4-Amino-2-(5-methyl-1,3,4-oxadiazol-2-yl)phenol CAS 1091990-90-7
| CAS No. | 1091990-90-7 |
| Molecular Formula | C9H9N3O2 |
| Molecular Weight | 191.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 4-Amino-2-(5-methyl-1,3,4-oxadiazol-2-yl)phenol 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.
CATO supplies 4-Amino-2-(5-methyl-1,3,4-oxadiazol-2-yl)phenol (CAS 1091990-90-7), a certified reference material (molecular formula C9H9N3O2, MW 191.19 g/mol) for analytical method development and quality control.
Structurally, 4-Amino-2-(5-methyl-1,3,4-oxadiazol-2-yl)phenol (C9H9N3O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 191.19 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C9H9N3O2 |
| Molecular Weight | 191.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 3 |
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Recommended Standards
- 5-[(1E)-N-hydroxyethanimidoyl]-1,3-dihydro-2H-benzimidazol-2-one (CAS 1087792-19-5)
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- n'-Hydroxy-2-{3h-imidazo[4,5-b]pyridin-2-yl}ethanimidamide (CAS 107933-05-1)
- 2,6-Dimethyl-5-nitro-2H-indazole (CAS 1092346-56-9)
- 2-(1,3-Benzothiazol-2-ylsulfanyl)-2-fluoroethan-1-ol (CAS 477889-73-9)
- 2,6-Dimethyl-4-(piperidin-1-ylmethyl)phenol (CAS 42900-97-0)
- 3-((3-Bromobenzyl)thio)-4-ethyl-5-(thiophen-2-yl)-4H-1,2,4-triazole (CAS 618412-36-5)
- 2,6-Dibromo-4-cyclopentylthiazolo[5,4-b]pyridin-5(4H)-one (CAS 1956380-01-0)
- 2-([1,1'-Biphenyl]-4-yl)acetaldehyde (CAS 61502-90-7)
- 3-Hydroxy-2,3-dimethylbutan-2-yl hydrogen (4-(4-methyl-1H-pyrazol-1-yl)furan-2-yl)boronate (CAS 2223042-40-6)
- 4-Chloro-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine (CAS 2096339-02-3)
- 5-(3-Cyanophenyl)nicotinic acid (CAS 893740-73-3)
- 2,2-Dimethyl-1-(pyrrolidin-2-yl)propan-1-one (CAS 1334493-99-0)
- Semaglutide impurity 38 (CAS CATO-C4X-222638)
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