tert-Butyl 4-(8-bromoquinazolin-2-yl)piperazine-1-carboxylate CAS 1698026-48-0
| CAS No. | 1698026-48-0 |
| Molecular Formula | C17H21BrN4O2 |
| Molecular Weight | 393.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
tert-Butyl 4-(8-bromoquinazolin-2-yl)piperazine-1-carboxylate (CAS 1698026-48-0), molecular formula C17H21BrN4O2 and molecular weight 393.28 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, tert-Butyl 4-(8-bromoquinazolin-2-yl)piperazine-1-carboxylate (C17H21BrN4O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 393.28 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C17H21BrN4O2 |
| Molecular Weight | 393.28 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 4 |
Recommended Standards
- Tert-butyl 4-(7-bromoquinoxalin-2-yl)piperazine-1-carboxylate (CAS 1448888-78-5)
- 2-Bromo-N,N-dimethyl-4-(5-phenylbenzo[d]oxazol-2-yl)aniline (CAS 1706439-79-3)
- Isopropyl (E)-3-(3-(3,5-bis(trifluoromethyl)phenyl)-1H-1,2,4-triazol-1-yl)acrylate (CAS 1421923-95-6)
- 1-tert-Butyl 2-methyl 3-(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)propyl)-1H-pyrrole-1,2-dicarboxylate (CAS 2376703-88-5)
- 2-((3-Chloro-5-(trifluoromethyl)pyridin-2-yl)thio)nicotinic acid (CAS 303149-99-7)
- 4-(4-Chlorobenzoyl)piperidine Hydrochloride (CAS 55695-51-7)
- 2-[(3S)-6-Chloro-8-methoxy-1H,2H,3H,4H-pyrido[2,3-b]pyrazin-3-yl]ethan-1-ol (CAS 1638604-08-6)
- 2-(4-(1h-Tetrazol-1-yl)phenoxy)propanoic acid (CAS 832740-17-7)
- Ethyl 4-{[(4-chlorophenyl)methyl]amino}-6-nitroquinoline-3-carboxylate (CAS 478248-26-9)
- 1,4-dibenzyl-2-(chloromethyl)piperazine (CAS 24225-89-6)
- 4-Chloro-8-methyl-1,5-naphthyridine (CAS 1360704-47-7)
- 5-chloro-2-methoxy-3-(methylcarbamoyl)benzene-1-sulfonyl chloride (CAS 1481595-14-5)
- (2-Aminophenyl)(3-chlorophenyl)methanone (CAS 57479-65-9)
- Tirzepatide Impurity 16 (CAS CATO-C4X-324016)
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