Isonicotinic anhydride CAS 7082-71-5
| CAS No. | 7082-71-5 |
| Molecular Formula | C12H8N2O3 |
| Molecular Weight | 228.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Isonicotinic anhydride (C12H8N2O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 228.20 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).
Isonicotinic anhydride (CAS 7082-71-5), molecular formula C12H8N2O3 and molecular weight 228.20 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), Isonicotinic anhydride 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 | C12H8N2O3 |
| Molecular Weight | 228.20 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
| Nitrogen Atoms | 2 |
Related Isonicotinic Standards
- Isonicotinic acid (3-amino-isoindol-1-ylidenE)-hydrazide (CAS 519150-46-0)
- Isonicotinic Acid Vanillylidenehydrazide (CAS 149-17-7)
- 2-Acetyl-isonicotinic acid methyl ester (CAS 138715-82-9)
- 3-Methyl Isonicotinic Acid-d6 (CAS 1346599-31-2)
- Isonicotinic-d4 Acid (CAS 53907-55-4)
- Isonicotinic acid compound with phosphoric acid (1:1) (CAS 54389-10-5)
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