66777-93-3 NSC-401698 NSC401698 Phosphoric acid, tris[(4-nitrophenyl)methyl] ester Tris(4-nitrobenzyl) phosphate CAS 66777-93-3
| CAS No. | 66777-93-3 |
| Molecular Formula | C21H18N3O10P |
| Molecular Weight | 503.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
66777-93-3 NSC-401698 NSC401698 Phosphoric acid, tris[(4-nitrophenyl)methyl] ester Tris(4-nitrobenzyl) phosphate (CAS 66777-93-3), molecular formula C21H18N3O10P and molecular weight 503.36 g/mol, is a CATO reference standard with documented purity and traceability.
66777-93-3 NSC-401698 NSC401698 Phosphoric acid, tris[(4-nitrophenyl)methyl] ester Tris(4-nitrobenzyl) phosphate (C21H18N3O10P) contains a flavonoid core, an amide group, a phosphate ester group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), 66777-93-3 NSC-401698 NSC401698 Phosphoric acid, tris[(4-nitrophenyl)methyl] ester Tris(4-nitrobenzyl) phosphate 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.
Physical & Chemical Properties
| Molecular Formula | C21H18N3O10P |
| Molecular Weight | 503.36 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) | 14.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Nitrogen Atoms | 3 |
Recommended Standards
- 4-[(2Z)-3-(2,4-Dimethoxyphenyl)prop-2-enoyl]phenyl 4-bromobenzene-1-sulfonate (CAS 331461-46-2)
- Benzyl 3,5-bis(benzyloxy)-4-bromobenzoate (CAS 158585-09-2)
- 1-Benzyl 2-methyl (2<I>S</I>,4<I>R</I>)-4-((4-bromoisoindoline-2-carbonyl)oxy)pyrrolidine-1,2-dicarboxylate (CAS 1269195-05-2)
- N-[(3S,4S)-3-[[6-(2,6-Dichloro-3,5-dimethoxyphenyl)-2-quinazolinyl]amino]tetrahydropyran-4-yl]acrylamide (CAS 1707289-21-1)
- 3-Bromo-5-chloro-6-methyl-1H-pyrrolo[2,3-b]pyridine (CAS 1000340-17-9)
- 4-(2-Aminoethyl)-2-propyltetrahydro-2h-pyran-4-ol (CAS 1523030-78-5)
- 6-Amino-N-(tert-butyl)-9H-purine-9-carboxamide (CAS 64442-31-5)
- tert-butyl 2-(piperidin-4-yl)benzoate (CAS 1803600-82-9)
- 2-(4-Methylthiazol-2-yl)-1-(piperazin-1-yl)ethan-1-one hydrochloride (CAS 1052549-44-6)
- Cyclohexane-1,4-dicarbonitrile (CAS 10534-13-1)
- tert-Butyl 3-(2-hydroxycyclobutyl)pyrrolidine-1-carboxylate (CAS 1823256-64-9)
- tert-Butyl7-chloro-1,2,3,5-tetrahydro-4H-benzo[e][1,4]diazepine-4-carboxylate (CAS 886364-33-6)
- 4-amino-2-fluorobenzene-1-sulfonyl fluoride (CAS 1989659-91-7)
- Semaglutide impurity 94 (CAS CATO-C4X-222694)
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