Urapidil Impurity 25 CAS 43091-72-1
| CAS No. | 43091-72-1 |
| Molecular Formula | C13H19ClN2O |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Urapidil Impurity 25 is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Urapidil Impurity 25 (CAS 43091-72-1), molecular formula C13H19ClN2OHCl and molecular weight 291.22 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C13H19ClN2OHCl, Urapidil Impurity 25 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 291.22 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Urapidil Impurity 25 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 | C13H19ClN2O 2*HCl |
| Molecular Weight | 291.22 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1969 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Urapidil Standards
- Urapidil Impurity 76 HBr (CAS 100939-96-6)
- Urapidil Impurity 61 HCl (CAS 1081534-21-5)
- Urapidil Impurity 9 (CAS 108997-11-1)
- Urapidil Impurity 70 (CAS 112735-05-4)
- Urapidil Impurity 75 (CAS 116315-12-9)
- Urapidil Impurity 69 (CAS 117525-95-8)
- Urapidil Impurity 54 (CAS 13300-33-9)
- Urapidil Impurity 88 (CAS 13379-99-2)
Recommended Standards
- 2-Cyclopropoxy-4-methoxybenzonitrile (CAS 1243405-44-8)
- (3S,6S,8aS)-Methyl 6-amino-5-oxooctahydroindolizine-3-carboxylate (CAS 158467-69-7)
- 4-(4-Chloro-3-methylphenyl)phthalazin-1(2H)-one (CAS 141123-12-8)
- 3-Ethoxy-4-methylbenzoic acid (CAS 1250606-59-7)
- Limaprost Impurity 19 (CAS CATO-C4X-214519)
- (R)-2-Trifluoromethylpyrrolidine-1-sulfonyl chloride (CAS 1389310-08-0)
- Methyl 2-(piperidin-4-yloxy)acetate (CAS 721391-32-8)
- (3-Hydroxy-1,2-phenylene)dimethanol (CAS 7369-27-9)
- 2-Methanesulfonyl-4-phenyl-pyrimidine (CAS 56734-11-3)
- D-Ser32-Tirzepatide (CAS CATO-CPTD788692)
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