1,3,6,8-Tetranitro-9H-carbazole CAS 4543-33-3
| CAS No. | 4543-33-3 |
| Molecular Formula | C12H5N5O8 |
| Molecular Weight | 347.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 1,3,6,8-Tetranitro-9H-carbazole (CAS 4543-33-3), a certified reference material (molecular formula C12H5N5O8, MW 347.20 g/mol) for analytical method development and quality control.
Structurally, 1,3,6,8-Tetranitro-9H-carbazole (C12H5N5O8) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 347.20 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), 1,3,6,8-Tetranitro-9H-carbazole 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 | C12H5N5O8 |
| Molecular Weight | 347.20 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 5 |
Related Tetranitro Standards
Recommended Standards
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- 7-(3,5-Dimethylisoxazol-4-yl)-6-methoxy-4-(((R)-1-(pyridin-2-yl)ethyl)amino)quinoline-3-carboxamide (CAS 1300737-69-2)
- N-(Benzo[d]thiazol-2-yl)-2-(2,4-dimethylthiazol-5-yl)acetamide (CAS 1234895-07-8)
- 4-{[(oxolan-2-yl)methyl]sulfamoyl}benzoic acid (CAS 325851-59-0)
- Semaglutide Impurity 148 (CAS CATO-C4X-2226148)
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