4-Hydroxy-1H-pyrrol-2(5H)-one CAS 503-83-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 503-83-3 |
| Molecular Formula | C4H5NO2 |
| Molecular Weight | 99.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Hydroxy-1H-pyrrol-2(5H)-one (CAS 503-83-3) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C4H5NO2. Molecular weight: 99.09 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C4H5NO2 |
| Molecular Weight | 99.09 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.) | 1957 |
| Nitrogen Atoms | 1 |
Related Hydroxy Standards
- 3-Hydroxy-1H-pyrrol-2(5H)-one (CAS 693826-68-5)
- 5-Hydroxy-1H-pyrrol-3(2H)-one (CAS 79469-69-5)
- 3-Hydroxy-3-methylbutyronitrile (CAS 13635-04-6)
- 2-Hydroxy-3-methylbutanenitrile (CAS 15344-34-0)
- 3-Hydroxy-2,2-dimethylpropanenitrile (CAS 19295-57-9)
- 2-Hydroxy-2-methylbutanenitrile (CAS 4111-08-4)
- 3-Hydroxy-2-methylbutanenitrile (CAS 38046-46-7)
- 4-Hydroxy-3-methylbutanenitrile (CAS 64404-55-3)
Recommended Standards
- 4-amino-2,5-dihydro-1H-imidazol-2-one (CAS 61318-63-6)
- 4-Methoxyisoxazole (CAS 83259-38-5)
- 4-Amino-1H-pyrazol-3(2H)-one (CAS 90293-76-8)
- 6-Hydroxy-2-phenyltetrahydro-1H-pyrrolo[1,2-c]imidazole-1,3(2H)-dione (CAS 321391-92-8)
- 5,8-Difluoro-4,4-dimethyl-3,4-dihydro-2H-[1,3'-biquinolin]-2-one (CAS 918646-24-9)
- (R)-2-Amino-2-carboxyethylmethanethiosulfonate (CAS 351422-29-2)
- (R)-1-(Quinolin-6-yl)ethan-1-ol (CAS 1344951-96-7)
- 1,1-Dioxido-2,3-dihydro-4H-thieno[2,3-b]thiopyran-4-yl 3-methoxybenzoate (CAS 343373-78-4)
- (5-Methyl-1,3,4-thiadiazol-2-yl)methanol (CAS 869108-51-0)
- D-Gln19-Tirzepatide (CAS CATO-CPTD788915)
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 13829788188 / jacky.chen@cato-chem.com