4-(Hydroxymethyl)-5-(phenylamino)-2H-pyrrol-2-one CAS 55876-73-8
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 55876-73-8 |
| Molecular Formula | C11H10N2O2 |
| Molecular Weight | 202.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(Hydroxymethyl)-5-(phenylamino)-2H-pyrrol-2-one (CAS 55876-73-8) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C11H10N2O2. Molecular weight: 202.21 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C11H10N2O2 |
| Molecular Weight | 202.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Nitrogen Atoms | 2 |
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Recommended Standards
- 4-(Hydroxymethylene)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one (CAS 4702-79-8)
- 4-(Furan-2-yl)benzohydrazide (CAS 732261-45-9)
- 4,4A,7,7a-tetrahydro-4,7-ethenocyclobuta[f]isobenzofuran-1,3(3aH,6aH)-dione (CAS 4602-96-4)
- tert-Butyl 8-oxa-2,11-diazaspiro[5.6]dodecane-2-carboxylate (CAS 1251016-99-5)
- 2-(Pyridin-2-yl)acetohydrazide (CAS 673-05-2)
- Tert-butyl (2S,4S)-2-(aminomethyl)-2-(4-bromobenzyl)-4-hydroxypyrrolidine-1-carboxylate (CAS 2566693-66-9)
- 4'-(Aminomethyl)-3',6'-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-6-carboxylic acid (CAS 326802-08-8)
- (4-Hydroxy-1-piperidinyl)(4,5,6,7-tetrahydro-1H-pyrazolo[4,3-c]pyridin-3-yl)methanone hydrochloride (CAS 1220033-85-1)
- 3-Ethyl-2-((3-methylbenzyl)thio)-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4(3H)-one (CAS 618879-73-5)
- Tirzepatide Impurity 59 (CAS CATO-C4X-324059)
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