4-Hydroxy-5-methyl-1H-pyrrol-2(5H)-one CAS 89323-91-1
| CAS No. | 89323-91-1 |
| Molecular Formula | C5H7NO2 |
| Molecular Weight | 113.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Hydroxy-5-methyl-1H-pyrrol-2(5H)-one (CAS 89323-91-1), molecular formula C5H7NO2 and molecular weight 113.11 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Hydroxy-5-methyl-1H-pyrrol-2(5H)-one (C5H7NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 113.11 g/mol, it falls into the low-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).
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 4-Hydroxy-5-methyl-1H-pyrrol-2(5H)-one 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 | C5H7NO2 |
| Molecular Weight | 113.11 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 1 |
Related Hydroxy Standards
- 3-Hydroxy-5-ethylisoxazole (CAS 10004-45-2)
- (S)-4-Hydroxy-5-methyl-1H-pyrrol-2(5H)-one (CAS 960237-50-7)
- 4-Hydroxy-5,6-dihydropyridin-2(1H)-one (CAS 500102-31-8)
- 5-Hydroxy-4-methyl-1,5-dihydro-2H-pyrrol-2-one (CAS 79641-88-6)
- 4-Hydroxy-3,3-dimethylbutanenitrile (CAS 103804-80-4)
- 4-Hydroxy-2,2-dimethylbutanenitrile (CAS 107289-41-8)
- 2-Hydroxy-2-methylpentanenitrile (CAS 4111-09-5)
- 2-Hydroxy-3,3-dimethylbutanenitrile (CAS 33350-17-3)
Recommended Standards
- 4-Hydroxytetrahydrofuran-3-carbonitrile (CAS 859750-88-2)
- 4,5-Dimethyl-2,3-dihydro-1,3-oxazol-2-one (CAS 59167-68-9)
- 4-Methoxy-3-oxobutanenitrile (CAS 739366-02-0)
- 4,5-Dihydro-1H-pyrrole-2-carboxylic acid (CAS 872264-15-8)
- Man5GlcNAc (CAS 74385-50-5)
- 5-fluoro-N,N,3-trimethyl-1-benzofuran-2-carboxamide (CAS 81718-71-0)
- 4-Methyl-2-thioxo-2,3-dihydrothiazole-5-carboxylic acid (CAS 57658-34-1)
- 2-Bromo-6-ethoxypyrazine (CAS 1027512-76-0)
- 4-Oxo-4-(3-{[(tetrahydro-2-furanylmethyl)amino]-carbonyl}anilino)butanoic acid (CAS 940538-91-0)
- 2-((Benzo[d][1,3]dioxol-5-ylmethyl)amino)ethan-1-ol (CAS 40172-14-3)
- 8-(Cyclopropylmethyl)-8-azabicyclo[3.2.1]octan-3-ol (CAS 1209791-69-4)
- 3-Chloro-4-phenylpyridazine (CAS 86663-07-2)
- N-phenyl-2-(phenylsulfonyl)acetamide (CAS 38010-31-0)
- Semaglutide Impurity 167 (CAS CATO-C4X-2226167)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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