1,4-Di-O-tosyl-2,3-O-isopropylidene-D-threitol 97% CAS 68224-53-3
| CAS No. | 68224-53-3 |
| Molecular Formula | C21H26O8S2 |
| Molecular Weight | 470.56 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.
1,4-Di-O-tosyl-2,3-O-isopropylidene-D-threitol 97% (CAS 68224-53-3), molecular formula C21H26O8S2 and molecular weight 470.56 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage, 1,4-Di-O-tosyl-2,3-O-isopropylidene-D-threitol 97% is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 470.56 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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 | C21H26O8S2 |
| Molecular Weight | 470.56 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Sulfur Atoms | 2 |
Recommended Standards
- (S)-ethyl 3-(4-(2,7-naphthyridin-1-ylamino)phenyl)-2-(3-oxospiro[3.5]non-1-en-1-ylamino)propanoate (CAS 455264-29-6)
- 1,4-Di-O-tosyl-2,3-O-isopropylidene-L-threitol (CAS 37002-45-2)
- (2S,2'S,3S,3'S)-DI-iPr-BABIBOP (CAS 2207601-12-3)
- 2-3-O-Isopropylidene-1-4-di-O-tosyl-D-threitol (CAS 51064-65-4)
- 3-(4-Chloro-3-ethoxy-2-fluorophenyl)propanoic acid (CAS 1323966-45-5)
- 24240-04-8 beta-Allocryptopine Benzo(e)(1,3)dioxolo(4,5-k)(3)benzazecin-14(6H)-one, 5,7,8,15-tetrahydro-3,4-dimethoxy-6-methyl- 5,7,8,15-Tetrahydro-3,4-dimethoxy-6-methylbenzo(e)(1,3)dioxolo(4,5-k)(3)benzazecin-14(6H)-one gamma-Homochelidonine Fagarine I (CAS 24240-04-8)
- 1-(2-(Trifluoromethyl)pyridin-4-yl)ethanamine dihydrochloride (CAS 2442597-51-3)
- 5-azaspiro[3.4]oct-7-ene (CAS 1989671-31-9)
- (3-Fluoro-2-methoxyphenyl)-hydrazine hydrochloride (CAS 1375477-11-4)
- 4-[1-(cyclopropylmethyl)-1H-imidazol-2-yl]-3,3-dimethylazetidin-2-one (CAS 2044835-10-9)
- Thioctic acid impurity 61 (CAS 26825-92-3)
- (1s)-1-(Furan-2-yl)ethan-1-ol (CAS 112653-32-4)
- Ethyl 6-fluoropyrazolo[1,5-a]pyrimidine-3-carboxylate (CAS 1204926-19-1)
- Semaglutide impurity 24 (CAS CATO-C4X-222624)
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