2-(2,2-Difluoro-2h-1,3-benzodioxol-5-yl)-2,2-difluoroacetic acid CAS 1638764-98-3
| CAS No. | 1638764-98-3 |
| Molecular Formula | C9H4F4O4 |
| Molecular Weight | 252.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 2-(2,2-Difluoro-2h-1,3-benzodioxol-5-yl)-2,2-difluoroacetic acid (CAS 1638764-98-3), a certified reference material (molecular formula C9H4F4O4, MW 252.12 g/mol) for analytical method development and quality control.
Structurally, 2-(2,2-Difluoro-2h-1,3-benzodioxol-5-yl)-2,2-difluoroacetic acid (C9H4F4O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 252.12 g/mol, it falls into the medium-molecular-weight range. 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 | C9H4F4O4 |
| Molecular Weight | 252.12 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | F-containing |
Related Difluoro Standards
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- Ethyl 7,8-difluoro-4-hydroxy-2-naphthoate (CAS 2696457-91-5)
- (Z)-4-(3,5-Difluoro-4-hydroxybenzylidene)-1,2-dimethyl-1H-imidazol-5(4H)-one (CAS 1241390-29-3)
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- 2,4-Difluoro-5-Nitrobenzyl bromide (CAS 1260790-43-9)
- 2,3-Difluoro-5-nitrobenzyl bromide (CAS 1803787-14-5)
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Recommended Standards
- 2-(3-Fluoro-4-(trifluoromethoxy)phenyl)-2-oxoacetic acid (CAS 1443312-00-2)
- 2,2,3,3-Tetrafluoro-2,3-dihydrobenzo[b][1,4]dioxine-6-carboxylic acid (CAS 180091-38-7)
- 2-cycloheptylacetamide (CAS 14224-71-6)
- (E)-(1,2-Diphenylbut-1-en-1-yl)boronic acid (CAS 918793-63-2)
- (2-(Methylthio)phenyl)(4-(pyrrolidin-1-ylmethyl)phenyl)methanone (CAS 898776-20-0)
- N-Cyclopropyl-3-(4-methoxyphenyl)-N-(thiophen-3-ylmethyl)propanamide (CAS 1234840-00-6)
- (5-Bromo-6-(piperidin-1-yl)pyridin-3-yl)boronic acid (CAS 2225173-66-8)
- (1r,3R,4S)-1-Amino-3,4-difluorocyclopentanecarboxylic acid hydrochloride (CAS 2489213-75-2)
- 3-(Difluoromethyl)-6-fluoro-4-hydroxypicolinonitrile (CAS 1806870-60-9)
- 2-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)-4-(3-(trifluoromethyl)phenyl)-2,4-dihydro-3H-1,2,4-triazol-3-one (CAS 343373-37-5)
- 2-((Dimethylamino)methyl)pyridin-4-amine (CAS 1423117-47-8)
- 4,4',4",4"'-([9,9'-Bicarbazole]-3,3',6,6'-tetrayl)tetraaniline (CAS 2559708-42-6)
- 7-bromo-3,4-dihydropyrano[3,2-b]pyridin-2-one (CAS 2387601-98-9)
- Tirzepatide (CAS 2023788-19-2)
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