SPIRO[1,3-DIOXOLANE-2,9’-[9H]FLUORENE]-4,5-DICARBOXYLIC ACID DIETHYL ESTER CAS 129178-60-5
| CAS No. | 129178-60-5 |
| Molecular Formula | C21H20O6 |
| Molecular Weight | 368.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), SPIRO[1,3-DIOXOLANE-2,9’-[9H]FLUORENE]-4,5-DICARBOXYLIC ACID DIETHYL ESTER 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.
SPIRO[1,3-DIOXOLANE-2,9’-[9H]FLUORENE]-4,5-DICARBOXYLIC ACID DIETHYL ESTER (CAS 129178-60-5), molecular formula C21H20O6 and molecular weight 368.38 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C21H20O6, SPIRO[1,3-DIOXOLANE-2,9’-[9H]FLUORENE]-4,5-DICARBOXYLIC ACID DIETHYL ESTER contains a flavonoid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 368.38 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C21H20O6 |
| Molecular Weight | 368.38 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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 |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
Related SPIRO Standards
- Spiro[3H-2-benzopyran-3,5’(3’aH)-[1,3]dioxolo[4,5-g]isoquinoline], 1,4,7’,8’-tetrahydro-7,8-dimethoxy-6’-methyl- (CAS 87264-55-9)
- Spiro[fluorene-9,9'-xanthene]-3',6'-diol (CAS 4081-00-9)
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- Spiro[fluorene-9,9'-xanthen]-2-ylboronic acid (CAS 1799644-51-1)
- Spiro[fluorene-9,9'-xanthen]-4-ylboronic acid (CAS 2244281-69-2)
- Spiro[fluorene-9,9'-xanthene]-2',7'-dicarbonitrile (CAS 152480-82-5)
- Spiro[benzo[c]fluorene-7,9'-xanthene] (CAS 1639407-50-3)
- 2-((1'H-Spiro[cyclohexane-1,2'-quinazolin]-4'-yl)thio)-N-(3-fluorophenyl)acetamide (CAS 893787-58-1)
Recommended Standards
- 2-(3,4-Dihydroxyphenyl)-5,7-dihydroxy-6-(3-methylbut-2-en-1-yl)-4H-chromen-4-one (CAS 129145-53-5)
- (R)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-acetamidopropanoic acid (CAS 1313054-72-6)
- 3-(Ethoxycarbonyl)-5-methyl-1-(4-phenoxyphenyl)-4,5-dihydro-1h-pyrazole-5-carboxylic acid (CAS 1264044-02-1)
- 4-(2,5-Difluorobenzoyl)-8-propyl-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid (CAS 1326809-10-2)
- 3-(3-Cyclopropyl-5-(trifluoromethyl)-1H-pyrazol-1-yl)-N-hydroxypropanimidamide (CAS 1006322-86-6)
- 3-((Cyclohexyloxy)methyl)benzenethiol (CAS 1443307-20-7)
- 2-((1-Cyclopentyl-1H-imidazol-2-yl)thio)-N-(4-nitrophenyl)acetamide (CAS 933013-85-5)
- 2-(2-Amino-phenyl)-thiazole-4-carboxylic acid ethyl ester (CAS 658076-43-8)
- 4-Amino-11-ethyl-5-sulfanylidene-8-thia-4,6,11-triazatricyclo[7.4.0.0^{2,7}]trideca-1(9),2(7)-dien-3-one (CAS 1779133-16-2)
- (2E)-1-(3-Bromophenyl)-3-(2,3,4-trimethoxyphenyl)prop-2-en-1-one (CAS 1287257-13-9)
- Ethyl 4-bromo-2-methoxy-6-methylbenzoate (CAS 1472104-38-3)
- 4-(1,2,3-Thiadiazol-5-yl)benzene-1-sulfonyl chloride (CAS 1367928-80-0)
- 5-Bromo-4-nitrothiophene-2-carbonitrile (CAS 2160-56-7)
- Fibrinopeptide B (human) (CAS 36204-23-6)
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