4-[(E)-[(3,4,5-Trimethoxyphenyl)methylidene]amino]phenyl 4-bromobenzene-1-sulfonate CAS 329777-91-5
| CAS No. | 329777-91-5 |
| Molecular Formula | C22H20BrNO6S |
| Molecular Weight | 506.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-[(E)-[(3,4,5-Trimethoxyphenyl)methylidene]amino]phenyl 4-bromobenzene-1-sulfonate 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.
4-[(E)-[(3,4,5-Trimethoxyphenyl)methylidene]amino]phenyl 4-bromobenzene-1-sulfonate (CAS 329777-91-5), molecular formula C22H20BrNO6S and molecular weight 506.37 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C22H20BrNO6S, 4-[(E)-[(3,4,5-Trimethoxyphenyl)methylidene]amino]phenyl 4-bromobenzene-1-sulfonate contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 506.37 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.
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 | C22H20BrNO6S |
| Molecular Weight | 506.37 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; 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.) | 2025 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related E Standards
- 13-(3,4,5-Trimethoxyphenyl)-2,10,16-trioxapentacyclo[12.8.0.0^{3,12}.0^{4,9}.0^{17,22}]docosa-1(14),3(12),4(9),5,7,17(22),18,20-octaene-11,15-dione (CAS 375359-23-2)
- 3-Benzyl-6-{[3-(3,4,5-trimethoxyphenyl)-1,2,4-oxadiazol-5-yl]methyl}-3H,6H,7H-[1,2,3]triazolo[4,5-d]pyrimidin-7-one (CAS 1040655-10-4)
- 4-[(2E)-3-(2,3,4-Trimethoxyphenyl)prop-2-enoyl]phenyl 4-tert-butylbenzoate (CAS 288306-49-0)
- 1-(3,4,5-Trimethoxyphenyl)-2-(triphenylphosphoranylidene)ethanone (CAS 122682-77-3)
- 4-[(2E)-3-(2,3,4-Trimethoxyphenyl)prop-2-enoyl]phenyl 4-nitrobenzoate (CAS 288306-48-9)
- Tris(2,4,6-trimethoxyphenyl)phosphine 91608-15-0 TRIS(2,4,6-TRIMETHOXYPHENYL)PHOSPHINE;TTMPP SC11122 (CAS 91608-15-0)
- 3-(3,4,5-Trimethoxyphenyl)acrylic anhydride (CAS 71989-97-4)
- 4-[(E)-[(3,4,5-Trimethoxyphenyl)methylidene]amino]phenyl 4-methoxybenzene-1-sulfonate (CAS 329777-92-6)
Recommended Standards
- Dotinurad Impurity 83 (CAS CATO-C4X-249483)
- TC-S 7004 (CAS 1386979-55-0)
- Oxazole, 2,2′-(diselenodi-2,1-phenylene)bis[4-ethyl-4,5-dihydro- (CAS 870639-90-0)
- 4-(Benzo[d]thiazol-2-ylthio)-3-nitrobenzyl (2,4-dichlorophenyl)carbamate (CAS 338393-83-2)
- Methyl (R)-4-((7R,8S,9S,10R,13R,14S,17R)-7-(methoxymethoxy)-10,13-dimethyl-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)pentanoate (CAS 610313-90-1)
- 4-chloro-3-iodo-1H-pyrazolo[4,3-c]pyridine (CAS 1186647-69-7)
- N-Ethyl-N,N-dimethyloctadecan-1-aminium bromide (CAS 111-98-8)
- (R)-1-(tert-butoxycarbonyl)-2-(3-chlorobenzyl)pyrrolidine-2-carboxylic acid (CAS 706806-68-0)
- 3,3,5-Trimethylpyrazolidine dihydrochloride (CAS 1181458-76-3)
- 3-(5-Iodo-3-(trifluoromethyl)-1H-pyrazol-1-yl)pyridine (CAS 1255041-96-3)
- 6-[(4-Methylphenyl)thio]-2-oxo-9-(2',3',5'-tri-O-acetyl-b-D-ribofuranosyl)-2,3-dihydropurine (CAS 135041-24-6)
- 4-Sulfamoylbenzamide (CAS 6306-24-7)
- 6-Fluoro-8-nitrochromone-3-carboxaldehyde (CAS 351003-07-1)
- Semaglutide impurity 78 (CAS CATO-C4X-222678)
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