4-Acetyl-5-hydroxy-1-methyl-1H-pyrrol-3(2H)-one CAS 303081-91-6
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 303081-91-6 |
| Molecular Formula | C7H9NO3 |
| Molecular Weight | 155.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Acetyl-5-hydroxy-1-methyl-1H-pyrrol-3(2H)-one (CAS 303081-91-6) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C7H9NO3. Molecular weight: 155.15 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C7H9NO3 |
| Molecular Weight | 155.15 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 methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
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Recommended Standards
- 4-Acetyl-3-methyl-4,5-dihydro-1,2,4-triazin-6(1H)-one (CAS 99979-62-1)
- 4-Amino-1,3-dimethyl-1H-pyrazole-5-carboxylic acid (CAS 756772-34-6)
- 4-(Pyrrolidin-1-yl)-1,2,5-oxadiazol-3(2H)-one (CAS 632292-00-3)
- 2-Amino-6-iodopyrimidin-4(3H)-one (CAS 59524-88-8)
- Ethyl 6-methyl-4H,5H,6H,7H-pyrazolo[1,5-a]pyrimidine-3-carboxylate (CAS 1694906-00-7)
- 2,5-Bis(4-bromophenyl)furan (CAS 36710-35-7)
- 5-Methyl-5H-dibenzo[b,d]thiophen-5-ium trifluoromethanesulfonate (CAS 112359-25-8)
- 2-(3-amino-5-methylphenoxy)ethan-1-ol hydrochloride (CAS 1795503-75-1)
- 3-Amino-N-(2-fluorophenyl)benzamide (CAS 954577-00-5)
- Semaglutide impurity 39 (CAS CATO-C4X-222639)
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