3,5-Dibromo-N'-((1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)methylene)-2-hydroxybenzohydrazide CAS 101868-30-8
| CAS No. | 101868-30-8 |
| Molecular Formula | C19H16Br2N4O3 |
| Molecular Weight | 508.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| 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 3,5-Dibromo-N'-((1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)methylene)-2-hydroxybenzohydrazide.
3,5-Dibromo-N'-((1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)methylene)-2-hydroxybenzohydrazide (CAS 101868-30-8) is a high-purity analytical reference standard with the molecular formula C19H16Br2N4O3 and a molecular weight of 508.16 g/mol.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution, 3,5-Dibromo-N'-((1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)methylene)-2-hydroxybenzohydrazide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 508.16 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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.
Physical & Chemical Properties
| Molecular Formula | C19H16Br2N4O3 |
| Molecular Weight | 508.16 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 4 |
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Recommended Standards
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- Inosine triphosphate (CAS 132-06-9)
- Zoledronic Acid Impurity 3 (CAS CATO-C4X-20153)
- 2,2,3,4,4,4-Hexafluorobutyl (2,2,3,3,4,4,5,5,6,6,6-undecafluorohexyl) carbonate (CAS 1980086-55-2)
- 1-[4-fluoro-3-(trifluoromethyl)phenyl]ethan-1-amine (CAS 1098068-92-8)
- 1-(2-Chlorophenyl)-N-((3,5-dimethylisoxazol-4-yl)methyl)ethan-1-amine (CAS 1042809-64-2)
- 4-Bromo-2-isopropoxy-3-methoxypyridine (CAS 1620691-45-3)
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- 1',3',3'-Trimethylspiro[chromene-2,2'-indoline]-6-sulfonic acid (CAS 82352-70-3)
- (R)-3-(Benzyloxyamino)-4-(2,4,5-trifluorophenyl)butanoic acid (CAS 767352-29-4)
- Ethyl (S)-2,5-dioxotetrahydro-1H-pyrrolizine-7a(5H)-carboxylate (CAS 2703745-57-5)
- Relugolix Impurity 10 (CAS CATO-C4X-242910)
- 4-(3-Amino-4-methoxyphenyl)-N-methylthiazol-2-amine (CAS 1245568-91-5)
- 263251-78-1 NMG938VJ6T D-3 Tavilermide [USAN:INN] UNII-NMG938VJ6T MIM-D3 MIM-D 3 D 3 (peptide) Tavilermide (CAS 263251-78-1)
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