1983-81-9 2H-1-Benzopyran-2-one,7-dihydroxy- 4,7-Dihydroxycoumarin Coumarin,7-dihydroxy- NSC-136214 NSC136214 CAS 1983-81-9
| CAS No. | 1983-81-9 |
| Molecular Formula | C9H12O4 |
| Molecular Weight | 184.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1983-81-9 2H-1-Benzopyran-2-one,7-dihydroxy- 4,7-Dihydroxycoumarin Coumarin,7-dihydroxy- NSC-136214 NSC136214 (CAS 1983-81-9) is a high-purity analytical reference standard with the molecular formula C9H12O4 and a molecular weight of 184.19 g/mol.
Based on its molecular formula C9H12O4, 1983-81-9 2H-1-Benzopyran-2-one,7-dihydroxy- 4,7-Dihydroxycoumarin Coumarin,7-dihydroxy- NSC-136214 NSC136214 contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 184.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), 1983-81-9 2H-1-Benzopyran-2-one,7-dihydroxy- 4,7-Dihydroxycoumarin Coumarin,7-dihydroxy- NSC-136214 NSC136214 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 | C9H12O4 |
| Molecular Weight | 184.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
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