Rizatriptan impurity 19 Benzoic acid CAS 1391062-44-4 (free base)
| CAS No. | 1391062-44-4 (free base) |
| Molecular Formula | C16H21N5O |
| Molecular Weight | N/A |
| 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 Rizatriptan impurity 19 Benzoic acid.
CATO supplies Rizatriptan impurity 19 Benzoic acid (CAS 1391062-44-4 (free base)), a pharmacopoeial impurity reference standard (molecular formula C16H21N5OC7H6O2, MW 421.50 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Rizatriptan impurity 19 Benzoic acid (C16H21N5OC7H6O2) contains a steroid core, 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 421.50 g/mol, it falls into the moderately-high-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).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a certified reference material (CRM), Rizatriptan impurity 19 Benzoic acid 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 | C16H21N5O C7H6O2 |
| Molecular Weight | 421.50 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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 |
| Nitrogen Atoms | 5 |
Related Rizatriptan Standards
- Rizatriptan EP Impurity G (CAS 1000673-59-5)
- Rizatriptan Dimer Impurity 3 (CAS 1016900-25-6)
- Rizatriptan impurity 01 (CAS 1030849-63-8)
- Rizatriptan Impurity N8 (CAS 1034806-43-3)
- Rizatriptan Impurity 14 (CAS 110-95-2)
- Rizatriptan Impurity 4 (CAS 1135479-41-2)
- Rizatriptan Dimer (CAS 1135479-44-5)
- Rizatriptan Impurity 15 (CAS 114094-45-0)
Recommended Standards
- Upadacitinib Impurity 125 (CAS CATO-C4X-2405125)
- Opicapone impurity 20 (CAS 2824922-36-1)
- (E)-Cilnidipine Impurity 14 (CAS CATO-C4X-179614)
- (Z)-3,5-dichloro-4-(3-ethoxy-2-methyl-3-oxoprop-1-en-1-yl)benzoic acid (CAS 2502057-35-2)
- 3-Cyclopropoxy-4-isopropoxybenzaldehyde (CAS 1243404-00-3)
- 6-(4-Ethoxyphenyl)-5-methylpyrimidin-4-ol (CAS 1256778-74-1)
- Sodium 4-hydroxy-2,2-dimethylbutanoate (CAS 107975-81-5)
- 3-[(Cyclopropylsulfonyl)amino]benzoic acid (CAS 1203110-28-4)
- 1-(Bromomethyl)-1-(cyclopropylmethoxy)-4-ethylcyclohexane (CAS 1249842-08-7)
- Semaglutide impurity 56 (CAS CATO-C4X-222656)
Why CATO?
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