Pentoxifylline Impurity 18 CAS 1185878-98-1
| CAS No. | 1185878-98-1 |
| Molecular Formula | - |
| Molecular Weight | 284.34 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Pentoxifylline Impurity 18 (CAS 1185878-98-1) is a certified pharmaceutical impurity reference standard with the molecular formula C13H12D6N4O3 and a molecular weight of 284.34 g/mol.
Owing to deuterium isotope labeling, a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Pentoxifylline Impurity 18 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 284.34 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
As a certified reference material (CRM), Pentoxifylline Impurity 18 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 | C13H12D6N4O3 |
| Molecular Weight | 284.34 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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.) | 1989 |
| Nitrogen Atoms | 4 |
Related Pentoxifylline Standards
- Pentoxifylline D6 (CAS CATO-C4X-172840)
- Pentoxifylline D5 (CAS 1185995-18-9)
- Pentoxifylline Impurity 17 (CAS 1185995-26-9)
- Pentoxifylline Impurity 16 (CAS 6493-06-7)
- Pentoxifylline Impurity 29 (CAS CATO-C4X-172829)
- Pentoxifylline impurity 35 (CAS CATO-C4X-172835)
- Pentoxifylline M4 (CAS 38975-44-9)
- Pentoxifylline (CAS 6493-05-6)
Recommended Standards
- Cimetidine Impurity 14 (CAS CATO-C4X-158914)
- n-Cyclopropyl-1-sulfanyl-[1,2,4]triazolo[4,3-a]quinoline-5-carboxamide (CAS 930396-28-4)
- Abemaciclib Impurity 130 (CAS CATO-C4X-2937130)
- N-(3-Cyano-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)pyrazine-2-carboxamide (CAS 312508-42-2)
- Aprepitant Impurity 28 (CAS 155742-64-6)
- Pimobendan Impurity 15 (CAS CATO-C4X-246115)
- Omacycline 12-amino impurity (CAS 2272886-39-0)
- Retelliptine (CAS 72238-02-9)
- 3-(Carbamothioylamino)benzamide (CAS 500865-55-4)
- 2'-iso-Propyl-2,2,2-trifluoroacetophenone (CAS 845823-14-5)
- 5-Oxo-5,6,7,8-tetrahydroquinoline-7-carboxamide (CAS 54318-91-1)
- (5aR,6S,9S,9aS)-2-Mesityl-6,11,11-trimethyl-5a,6,7,8,9,9a-hexahydro-4H-6,9-methanobenzo[b][1,2,4]triazolo[4,3-d][1,4]oxazin-2-ium Tetrafluoroborate (CAS 1037287-79-8)
- N-Cyclohexyl 4-chloropicolinamide (CAS 1094332-66-7)
- Pancreatic Polypeptide (1-17)-(Ala31,Aib32)-Neuropeptide Y (18-36) (human) trifluoroacetate salt (CAS 313988-70-4)
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