(S)-11-(tert-Butyldimethylsilyl)-4-ethyl-4,9-dihydroxy-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione CAS 220913-32-6
| CAS No. | 220913-32-6 |
| Molecular Formula | C26H30N2O5Si |
| Molecular Weight | 478.61 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of (S)-11-(tert-Butyldimethylsilyl)-4-ethyl-4,9-dihydroxy-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
(S)-11-(tert-Butyldimethylsilyl)-4-ethyl-4,9-dihydroxy-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione (CAS 220913-32-6), molecular formula C26H30N2O5Si and molecular weight 478.61 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, (S)-11-(tert-Butyldimethylsilyl)-4-ethyl-4,9-dihydroxy-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 478.61 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 | C26H30N2O5Si |
| Molecular Weight | 478.61 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2020 |
| Nitrogen Atoms | 2 |
Recommended Standards
- (5Z)-3-Benzyl-5-({2-[(4-methylphenyl)sulfanyl]-5-nitrophenyl}methylidene)-2-sulfanylidene-1,3-thiazolidin-4-one (CAS 329078-86-6)
- 2-((3-Ethyl-4-oxo-3,4,5,6,7,8-hexahydrobenzo[4,5]thieno[2,3-d]pyrimidin-2-yl)thio)-N-(4-sulfamoylphenyl)acetamide (CAS 618879-64-4)
- Omeprazole Impurity N1 (CAS 1346600-29-0)
- Aztreonam Impurity K (CAS 89604-92-2)
- 2-(((8-Hydroxy-5-nitroquinolin-7-yl)methyl)amino)propanoic acid (CAS 84677-20-3)
- Cefoperazone Sodium (CAS 62893-20-3)
- 1-(4-Bromophenyl)-2-((9-methyl-9H-purin-6-yl)thio)ethanone (CAS 111780-42-8)
- 1-[4-(4-Fluorophenyl)-1,3-thiazol-2-yl]-4-(4-methoxyphenyl)-1H-pyrazol-5-amine (CAS 955964-74-6)
- 4-(trifluoromethyl)cyclohexane-1-sulfonyl chloride (CAS 1343053-89-3)
- N-(2-(3,5-bis(trifluoromethyl)-1H-pyrazol-1-yl)pyridin-3-yl)-3-(trifluoromethyl)benzamide (CAS 956795-31-6)
- Methyl 5-(((4-fluorophenyl)amino)methyl)-3-hydroxy-4-(hydroxymethyl)picolinate (CAS 1198621-18-9)
- 698999-65-4 Cerium(3+) trifluoromethanesulfonate--water (1/3/1) DTXSID80746590 (CAS 698999-65-4)
- 1-(3-Chloro-2-methylphenyl)heptan-1-one (CAS 1352217-81-2)
- Semaglutide impurity 48 (CAS CATO-C4X-222648)
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