Dequalinium EP Impurity B (2Formate) CAS 747387-02-6 (free base)
| CAS No. | 747387-02-6 (free base) |
| Molecular Formula | C30H39N4 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Dequalinium EP Impurity B (2Formate) (CAS 747387-02-6 (free base)) is a certified pharmaceutical impurity reference standard with the molecular formula C30H39N4CH2O2CHO2 and a molecular weight of 546.71 g/mol.
Based on its molecular formula C30H39N4CH2O2CHO2, Dequalinium EP Impurity B (2Formate) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 546.71 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), Dequalinium EP Impurity B (2Formate) 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 | C30H39N4 2*CH2O2 CHO2 |
| Molecular Weight | 546.71 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
Related Dequalinium Standards
- Dequalinium 2*Chloride x*Hydrate (CAS 1255077-34-9)
- Dequalinium Impurity 15 (CAS 15821-13-3)
- Dequalinium Impurity 4 (CAS 16355-92-3)
- Dequalinium EP Impurity C trichloride (CAS 171980-50-0)
- Dequalinium Chloride EP Impurity B chloride (CAS 171980-52-2)
- Dequalinium Impurity 7 (CAS 19056-26-9)
- Dequalinium iodide (CAS 2019-42-3)
- Dequalinium impurity 18 (CAS 2377370-96-0)
Recommended Standards
- Montelukast Impurity 29 (CAS 184764-13-4)
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- 2-Methyl-7H-purin-8-ol (CAS 39209-56-8)
- Ethyl 6-bromo-3-formyl-1H-indole-2-carboxylate (CAS 318292-54-5)
- 5-Aminopyridine-2(1H)-thione (CAS 27885-56-9)
- 20289-27-4 7-(Phenylmethoxy)indole 7-(benzyloxy)-1h-indole 7-Benzyloxyindole 7-benzyloxy indole 7-benzyloxy-1h-indole (CAS 20289-27-4)
- Benzyl (4-(cyclopropylamino)cyclohexyl)carbamate (CAS 1353955-50-6)
- (11b,17b)-17-Hydroxy-11-(4-hydroxyphenyl)-17-(1-propyn-1-yl)-estra-4,9-dien-3-one (CAS 88257-21-0)
- Fibrinopeptide A, human TFA (CAS 61533-47-9)
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