N-[6-Amino-1,2,3,4-tetrahydro-2,4-dioxo-1-(phenylmethyl)-5-pyrimidinyl]-2-chloro-N-(3-methylbutyl)acetamide CAS 571917-23-2
| CAS No. | 571917-23-2 |
| Molecular Formula | C18H23ClN4O3 |
| Molecular Weight | 378.85 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.
N-[6-Amino-1,2,3,4-tetrahydro-2,4-dioxo-1-(phenylmethyl)-5-pyrimidinyl]-2-chloro-N-(3-methylbutyl)acetamide (CAS 571917-23-2), molecular formula C18H23ClN4O3 and molecular weight 378.85 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of N-[6-Amino-1,2,3,4-tetrahydro-2,4-dioxo-1-(phenylmethyl)-5-pyrimidinyl]-2-chloro-N-(3-methylbutyl)acetamide (C18H23ClN4O3) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C18H23ClN4O3 |
| Molecular Weight | 378.85 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.) | 1984 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
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Recommended Standards
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- Empagliflozin Impurity 295 (CAS CATO-C4X-1065295)
- 2-Bromo-1-(2,3-dichloro-6-fluorophenyl)ethan-1-one (CAS 886762-53-4)
- 1H-Benzo[c][1,2]thiazin-4(3H)-one 2,2-dioxide (CAS 7117-28-4)
- 4-methyl-1H-1,3-benzodiazole-2-carboxylic acid (CAS 673487-32-6)
- 3-Amino-N-(tert-butyl)benzamide (CAS 25900-62-3)
- 6-(Tert-butyl)-2-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carbonitrile (CAS 438532-35-5)
- Methyl 6-bromo-3-nitropicolinate (CAS 1805473-07-7)
- 2-[2-(3-Methylphenoxy)ethyl]piperidine (CAS 946715-77-1)
- 3-[[(2-Amino-4-thiazolyl)methyl]thio]propanenitrile (CAS 76823-89-7)
- Methyl dibenzyl-L-serinate (CAS 88099-67-6)
- Semaglutide impurity 49 (CAS CATO-C4X-222649)
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