5-(Pyrazin-2-yl)-1,3,4-oxadiazol-2-ol CAS 91144-81-9
| CAS No. | 91144-81-9 |
| Molecular Formula | C6H4N4O2 |
| Molecular Weight | 164.12 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-(Pyrazin-2-yl)-1,3,4-oxadiazol-2-ol.
5-(Pyrazin-2-yl)-1,3,4-oxadiazol-2-ol (CAS 91144-81-9) is a high-purity analytical reference standard with the molecular formula C6H4N4O2 and a molecular weight of 164.12 g/mol.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 5-(Pyrazin-2-yl)-1,3,4-oxadiazol-2-ol is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 164.12 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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-(Pyrazin-2-yl)-1,3,4-oxadiazol-2-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 | C6H4N4O2 |
| Molecular Weight | 164.12 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.) | 1983 |
| Nitrogen Atoms | 4 |
Related Pyrazin Standards
- 3-(pyrazin-2-yl)-4,5-dihydro-1,2,4-oxadiazol-5-one (CAS 114347-13-6)
- 1-(Pyrazin-2-yl)butane-1,3-dione (CAS 106971-51-1)
- 1-(Pyrazin-2-yl)pentan-1-one (CAS 41110-21-8)
- 3-Methyl-1-(pyrazin-2-yl)butan-1-one (CAS 86461-64-5)
- 1-(Pyrazin-2-yl)pyrrolidin-3-amine (CAS 1248940-89-7)
- (1-(Pyrazin-2-yl)azetidin-3-yl)methanamine (CAS 1481246-00-7)
- N-(1-(Pyrazin-2-yl)ethyl)cyclopropanamine (CAS 1185542-82-8)
- 1-(Pyrazin-2-yl)cyclopentan-1-amine (CAS 1497372-36-7)
Recommended Standards
- 4-Nitro-1H-1,2,3-benzotriazole (CAS 6299-39-4)
- 5-Cyano-6-oxo-1,6-dihydropyridine-2-carboxylic acid (CAS 19841-76-0)
- 3-Nitropyrazolo[1,5-a]pyrimidine (CAS 55405-64-6)
- 5-Nitro-1,2-benzisoxazole (CAS 39835-28-4)
- 2-Butenedioic acid (2E)-, polymer with 1,2-ethanediol and 4,5,6,7,8,8-hexachloro-3a,4,7,7a-tetrahydro-4,7-methanoisobenzofuran-1,3-dione (CAS 82168-35-2)
- 2-(2-(Difluoromethyl)-4,5-difluorophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2604514-82-9)
- N-(4-Fluorobenzyl)-2-((5-methoxyisoquinolin-1-yl)thio)acetamide (CAS 1202993-99-4)
- 4,4'-(1,4-Phenylenebis(azanediyl))bis(4-oxobut-2-enoic acid) (CAS 36847-99-1)
- 4-(tert-Butoxy)-2-cyclopropoxy-1-fluorobenzene (CAS 1243371-78-9)
- 1-Bromo-2-fluoro-4-nitro-5-(2,2,2-trifluoroethoxy)benzene (CAS 1820716-82-2)
- 3-Acetyl -2-hydroxybenzamide (CAS 244287-09-0)
- Methyl 5,6-difluoro-3-iodo-1H-indole-2-carboxylate (CAS 1415394-13-6)
- 4-(1H-Indol-4-yl)but-3-en-2-one (CAS 74068-98-7)
- Peptide Impurity 05 (CAS 2322924-83-2)
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