2-(2-Oxoindolin-3-ylidene)malononitrile CAS 6623-89-8
| CAS No. | 6623-89-8 |
| Molecular Formula | C11H5N3O |
| Molecular Weight | 195.18 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 2-(2-Oxoindolin-3-ylidene)malononitrile.
2-(2-Oxoindolin-3-ylidene)malononitrile (CAS 6623-89-8), molecular formula C11H5N3O and molecular weight 195.18 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2-(2-Oxoindolin-3-ylidene)malononitrile (C11H5N3O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 195.18 g/mol, it falls into the medium-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.
As a certified reference material (CRM), 2-(2-Oxoindolin-3-ylidene)malononitrile meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C11H5N3O |
| Molecular Weight | 195.18 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 3 |
Related Oxoindolin Standards
- 2-(2-Oxoindolin-3-yl)acetic acid (CAS 2971-31-5)
- 2-(2-Oxoindolin-5-yl)acetic acid (CAS 109737-08-8)
- 2-(2-Oxoindolin-4-yl)acetic acid (CAS 122570-32-5)
- (1-Methyl-2-oxoindolin-6-yl)boronic acid (CAS 1260433-35-9)
- (1-Methyl-2-oxoindolin-5-yl)boronic acid (CAS 1329042-89-8)
- N-(2-oxoindolin-5-yl)acetamide (CAS 114741-27-4)
- N-(2-Oxoindolin-6-yl)acetamide (CAS 58605-01-9)
- (Z)-2-(2-Oxoindolin-3-ylidene)acetic acid (CAS 61854-73-7)
Recommended Standards
- 2-(2-Amino-2-oxoethyl)-4-methylpyrimidine-5-carboxylic acid (CAS 90223-28-2)
- 2-(4-Nitrophenyl)acetohydrazide (CAS 6144-81-6)
- 2-((6-Methoxypyridazin-3-yl)methylene)hydrazinecarboxamide (CAS 89854-30-8)
- 2-(Pyridin-2-yl)-1H-imidazole-4,5-dicarbonitrile (CAS 58259-78-2)
- N-[(6-chloropyridin-3-yl)methyl]-N-methylpropan-2-amine (CAS 1016688-73-5)
- 2-(6-Oxo-4-(pyridin-4-yl)pyrimidin-1(6H)-yl)acetic acid (CAS 1713174-01-6)
- 5-Bromo-N-methoxy-N-methylfuran-2-carboxamide (CAS 179055-22-2)
- 2-(Benzylsulfonyl)-N-hydroxyacetimidamide (CAS 1242336-23-7)
- Cyanic (S-(2-(2,5-dioxopyrrolidin-1-yl)-1-phenylethyl) carbonimidothioic) thioanhydride (CAS 353254-68-9)
- Proglumetacin - API Standards (CAS 57132-53-3)
- Empagliflozin Impurity 03 (CAS 312749-31-8)
- N,N-Diethyl-4-nitrobenzamide (CAS 5323-47-7)
- Cefadroxil Impurity 49 (CAS CATO-C4X-122449)
- 551936-17-5 3JX85UOO24 AIM-102 UNII-3JX85UOO24 (4R)-4-(((2R)-2-Amino-3-cyclohexyl-propanoyl)amino)-5-(carboxymethylamino)-5-oxo-pentanoic acid D-Cyclohexylalanine-D-glutamic-glycine tripeptide Glycine, 3-cyclohexyl-D-alanyl-D-alpha-glutamyl- (CAS 551936-17-5)
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