3H-Indolium, 2-[2-[4-(diethylamino)phenyl]ethenyl]-1,3,3-trimethyl-, phosphate (1:1) CAS 75535-16-9
| CAS No. | 75535-16-9 |
| Molecular Formula | C23H29N2 |
| Molecular Weight | N/A |
| 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 3H-Indolium, 2-[2-[4-(diethylamino)phenyl]ethenyl]-1,3,3-trimethyl-, phosphate (1:1).
3H-Indolium, 2-[2-[4-(diethylamino)phenyl]ethenyl]-1,3,3-trimethyl-, phosphate (1:1) (CAS 75535-16-9), molecular formula C23H29N2H2O4P and molecular weight 430.49 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, an amide group, a phosphate ester group, a hydroxyl group, an ether linkage, 3H-Indolium, 2-[2-[4-(diethylamino)phenyl]ethenyl]-1,3,3-trimethyl-, phosphate (1:1) is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 430.49 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C23H29N2 H2O4P |
| Molecular Weight | 430.49 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 9.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
| Nitrogen Atoms | 2 |
Related H Standards
- 3H-Indolium, 2-[2-[2-chloro-3-[2-[1,3-dihydro- 3,3-dimethyl-1-(4-sulfobutyl)-2H-indol-2- ylidene]ethylidene]-1-cyclohexen-1-yl]ethenyl]- 3,3-dimethyl-1-(4-sulfobutyl)-, inner salt, 97% (CAS 162411-20-3)
- 3H-Indolium,2-[5-[1,3-dihydro-3,3-dimethyl-5-sulfo-1-(3-sulfopropyl)-2H-indol-2-ylidene]-1,3-pentadienyl]-3,3-dimethyl-5-sulfo-1-(3-sulfopropyl)-,inner salt, trisodiumsalt (CAS 190517-63-6)
- 207399-07-3 3H-Indolium, 2-(2-(2-chloro-3-((1,3-dihydro-3,3-dimethyl-1-propyl-2H-indol-2-ylidene)ethylidene)-1-cyclohexen-1-yl)ethenyl)-3,3-dimethyl-1-propyl-, iodide 3H-Indolium, 2-(2-(2-chloro-3-(2-(1,3-dihydro-3,3-dimethyl-1-propyl-2H-indol-2-ylidene)ethylidene)-1-cyclohexen-1-yl)ethenyl)-3,3-dimethyl-1-propyl-, iodide (1:1) (CAS 207399-07-3)
- 207399-10-8 3H-Indolium, 2-[2-[3-[2-(1,3-dihydro-3,3-dimethyl-1-propyl-2H-indol-2-ylidene)ethylidene]-2-(phenylthio)-1-cyclohexen-1-yl]ethenyl]-3,3-dimethyl-1-propyl-, perchlorate (1:1) CTK0J9971 (CAS 207399-10-8)
- 3H-Indolium,2-[2-[2-chloro-3-[(1,3-dihydro-1,3,3-trimethyl-5-sulfo-2H-indol-2-ylidene)ethylidene]-1-cyclohexen-1-yl]ethenyl]-1,3,3-trimethyl-5-sulfo-,inner salt, sodiumsalt (CAS 328064-20-6)
- 3H-Indolium, 2-[3-(1,3-dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)-1-propen-1-yl]-1,3,3-trimethyl-, chloride (1:1) (CAS 6320-14-5)
- 3H-Indolium, 2-[2-[4-(diethylamino)phenyl]ethenyl]-1,3,3-trimethyl-, chloride (1:1) (CAS 6359-45-1)
- 3H-Indolium, 2-[2-[4-[(2-cyanoethyl)ethylamino]-2-methylphenyl]ethenyl]-1,3,3-trimethyl-, phosphate (CAS 72208-20-9)
Recommended Standards
- 1-Allyl-4-(2-fluorophenyl)-1H-imidazol-5-amine (CAS 1248627-60-2)
- N-benzyl-2-chloro-N-(2-methoxyethyl)acetamide (CAS 103463-05-4)
- α-Phenyl-α-[3-(phenyl-2-pyridinylmethylene)-2,4-cyclopentadien-1-yl]-2-pyridinemethanol (E/Z mixture) (CAS 2026-58-6)
- 1-((3-Bromothiophen-2-yl)methyl)-1h-pyrazol-3-amine (CAS 1250547-14-8)
- Tartaric Acid Impurity N1 (CAS 860708-13-0)
- 2-(Hydroxymethyl)-2-methylbutanal (CAS 1112-47-6)
- (2-Aminopyridin-4-yl)dimethylphosphine oxide (CAS 2361977-47-9)
- (R)-3-amino-3-phenylpropanamide (CAS 1138806-08-2)
- (1R)-3,3′-Bis[(E)-[[(1S,2S)-2-(1,3-dihydro-2H-isoindol-2-yl)-1,2-diphenylethyl]imino]methyl][1,1′-binaphthalene]-2,2′-diol (CAS 1620285-51-9)
- D-[Thr]5-Semaglutide (CAS CATO-C4X-2226245)
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