1-[2-(Triisopropylsilyl)ethynyl]-3,3-bis(trifluoromethyl)-1,2-benziodoxole CAS 181934-34-9
| CAS No. | 181934-34-9 |
| Molecular Formula | C20H25F6IOSi |
| Molecular Weight | 550.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
1-[2-(Triisopropylsilyl)ethynyl]-3,3-bis(trifluoromethyl)-1,2-benziodoxole (CAS 181934-34-9) is a high-purity analytical reference standard with the molecular formula C20H25F6IOSi and a molecular weight of 550.39 g/mol.
Owing to a steroid core, a hydroxyl group, an ether linkage, fluorine/iodine substitution, 1-[2-(Triisopropylsilyl)ethynyl]-3,3-bis(trifluoromethyl)-1,2-benziodoxole is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 550.39 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).
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 | C20H25F6IOSi |
| Molecular Weight | 550.39 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2008 |
| Halogen Content | F/I-containing |
Related Triisopropylsilyl Standards
- 9,10-Bis((triisopropylsilyl)ethynyl)anthracene (CAS 862667-06-9)
- 4,7-Bis((triisopropylsilyl)ethynyl)benzo[c][1,2,5]thiadiazole-5,6-diamine (CAS 1632986-19-6)
- 5,12-Bis((triisopropylsilyl)ethynyl)tetracene (CAS 628316-50-7)
- 8-((Triisopropylsilyl)ethynyl)naphthalen-1-yl trifluoromethanesulfonate (CAS 2135543-95-0)
- 6,13-Bis((triisopropylsilyl)ethynyl)pentacene 373596-08-8 6,13-Bis(triisopropylsilylethynyl)pentacene (CAS 373596-08-8)
- (3-((Triisopropylsilyl)ethynyl)-4-((trimethylsilyl)ethynyl)-hexa-3-en-1,5-diyne-1,6-diyl)bis(triisopropylsilane) (CAS 142761-77-1)
- 1-[(Triisopropylsilyl)ethynyl]-1,2-benziodoxol-3(1<I>H</I>)-one (CAS 181934-30-5)
- Benzyl 1-(triisopropylsilyl)-1H-pyrrolo[2,3-b]pyridine-5-carboxylate (CAS 858116-67-3)
Recommended Standards
- 4,7-Dibromo-5,6-bis((2-ethylhexyl)oxy)benzo[c][1,2,5]thiadiazole (CAS 1642535-94-1)
- Edoxaban Impurity 4 (CAS 2568974-02-5)
- 4,7-Dibromo-5,6-di-n-octyloxy-2,1,3-benzothiadiazole (CAS 1192352-08-1)
- (2Z)-3-[3-(2-{4-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]piperazin-1-yl}ethoxy)phenyl]-1-(4-chlorophenyl)prop-2-en-1-one (CAS 338409-25-9)
- 2-Amino-3-bromobenzamide (CAS 437998-34-0)
- (4,5,6,7-Tetrahydro-1H-indazol-3-yl)methanethiol (CAS 2228310-10-7)
- 4-(Trifluoromethylthio)pyridine (CAS 651059-83-5)
- (2S)-5-methylpyrrolidine-2-carboxylic acid (CAS 681128-94-9)
- tert-Butyl (S)-(1-(5-amino-3,6-dibromopyridin-2-yl)-2-(3,5-difluorophenyl)ethyl)carbamate (CAS 1620056-53-2)
- BTF-2Th12Br (CAS 1373834-93-5)
- 6-(tert-Butyl)-2-(methylthio)-4-(trifluoromethyl)nicotinonitrile (CAS 893752-77-7)
- 2-Chloro-N-[4-(4-propyl-phenyl)-thiazol-2-yl]-acetamide (CAS 726151-39-9)
- Tert-butyl 2-(4-fluorobenzoyl)hydrazine-1-carboxylate (CAS 863296-72-4)
- Neuropeptide S (rat) (CAS 412938-75-1)
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