Butalbital Impurity 1 CAS CATO-C4X-19831
| CAS No. | CATO-C4X-19831 |
| Molecular Formula | C12H18N2O3 |
| Molecular Weight | 238.28 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 Butalbital Impurity 1.
Butalbital Impurity 1 (CAS CATO-C4X-19831) is a certified pharmaceutical impurity reference standard with the molecular formula C12H18N2O3 and a molecular weight of 238.28 g/mol.
Based on its molecular formula C12H18N2O3, Butalbital Impurity 1 contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 238.28 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), Butalbital Impurity 1 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 | C12H18N2O3 |
| Molecular Weight | 238.28 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Butalbital Standards
Recommended Standards
- Phenytoin impurity 5 (CAS 3254-93-1)
- 3,3'-(Butane-1,4-diylbis(oxy))bis(propane-1,2-diol) (CAS 45176-21-4)
- Tolterodine Impurity 1 (CAS 40546-94-9)
- Vitamin K1 Impurity 61 (CAS 121917-04-2)
- Anagrelide Impurity 45 (CAS CATO-C4X-224045)
- Avatrombopag Impurity 18 (CAS 958457-83-5)
- Solriamfetol Impurity 3 (CAS CATO-C4X-25633)
- 1,3-Dibromo-5-butoxybenzene (CAS 896745-35-0)
- (6-Chloropyridin-3-yl)(1,1-dioxidothiomorpholino)methanone (CAS 1154382-72-5)
- 6-Chloro-N-(4-methoxyphenyl)-2-pyridinamine (CAS 1219976-82-5)
- Dipropyl oxalate (CAS 615-98-5)
- 3-Chloro-N,N-diethylbenzenesulfonamide (CAS 1312206-52-2)
- 1-[4-(2,2-Difluoroethoxy)-2-fluorophenyl]-ethanone (CAS 1691758-79-8)
- Semaglutide impurity 274 (CAS CATO-C4X-2226274)
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