Tranexamic Acid EP Impurity D CAS 56-91-7
| CAS No. | 56-91-7 |
| Molecular Formula | C8H9NO2 |
| Molecular Weight | 151.16 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| 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 Tranexamic Acid EP Impurity D.
Tranexamic Acid EP Impurity D (CAS 56-91-7) is a certified pharmaceutical impurity reference standard with the molecular formula C8H9NO2 and a molecular weight of 151.16 g/mol.
Tranexamic Acid EP Impurity D (C8H9NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Tranexamic Acid EP Impurity D 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 | C8H9NO2 |
| Molecular Weight | 151.16 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Tranexamic Standards
- Tranexamic Acid EP Impurity C (CAS 330838-52-3)
- Tranexamic Acid (CAS 1197-18-8)
- Tranexamic Acid EP Impurity B (CAS 1197-17-7)
- Tranexamic-d2 Acid (CAS 2714435-89-7)
- Tranexamic Impurity 17 (CAS 13064-83-0)
- Tranexamic Acid Impurity 9 (CAS CATO-C4X-17719)
- Tranexamic Acid-13C2,15N (CAS 1292837-95-6)
- Tranexamic Acid Impurity 9 (CAS 5592-68-7)
Recommended Standards
- Lidocaine Impurity 49 (CAS 81-20-9)
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- Rebamipide Impurity 56 (CAS CATO-C4X-152356)
- Flurbiprofen Impurity 21 (Mixture of Diastereomers) (CAS 124635-84-3)
- Olaparib Impurity N1 (CAS 763111-46-2)
- n'-(1-(Pyridin-2-yl)ethylidene)formohydrazide (CAS 109353-25-5)
- 5-Fluoro-2-(2-(pyrrolidin-1-yl)ethoxy)benzaldehyde (CAS 1216116-47-0)
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- N-(tert-Butyl)-1-cyanocyclopropane-1-sulfonamide (CAS 1823963-81-0)
- 2,7-Dichlorobenzo[d]thiazol-4-amine (CAS 70200-93-0)
- Neuropeptide S (human) (CAS 412938-67-1)
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