Toluene-4-sulfonic acid 2-cyclopropyl-ethyl ester CAS 63064-31-3
| CAS No. | 63064-31-3 |
| Molecular Formula | C12H16O3S |
| Molecular Weight | 240.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Toluene-4-sulfonic acid 2-cyclopropyl-ethyl ester (C12H16O3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 240.32 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Toluene-4-sulfonic acid 2-cyclopropyl-ethyl ester (CAS 63064-31-3) is a high-purity analytical reference standard with the molecular formula C12H16O3S and a molecular weight of 240.32 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C12H16O3S |
| Molecular Weight | 240.32 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Sulfur Atoms | 1 |
Related Toluene Standards
- 3-(Toluene-4-sulfonylamino)-propionic acid (CAS 42908-33-8)
- 4-(Toluene-4-sulfonyl)butylamine (CAS 1018300-58-7)
- 3-Methyl-1-(toluene-4-sulfonyl)-piperazine (CAS 178624-90-3)
- Toluene-4-sulfonic acid tetrahydro-furan-3-ylmethyl ester (CAS 15833-63-3)
- 2-(Toluene-4-sulfonylamino)butyric acid (CAS 69676-71-7)
- (Toluene-3,4-dithiolato)zinc(II) (CAS 29726-21-4)
- [4-(Toluene-4-sulfonyl)-phenyl]-hydrazine (CAS 80912-28-3)
- 1-(Toluene-4-sulfonyl)-1H-pyrrolo[2,3-b]pyridine (CAS 348640-02-8)
Recommended Standards
- tert-Butyl 6,7-dihydrothiazolo[4,5-c]pyridine-5(4H)-carboxylate (CAS 726207-27-8)
- Trans-3-methyl-4-tosyltetrahydrofuran (CAS 89478-94-4)
- tert-Butyl 5-(1,3-dioxolan-2-yl)-2-thienyl ketone (CAS 898772-82-2)
- 898771-86-3 1-[5-(1,3-Dioxolan-2-yl)thiophen-2-yl]pentan-1-one DTXSID80641874 (CAS 898771-86-3)
- 1-Benzyl-3-hydroxypiperidin-4-one (CAS 437608-32-7)
- (S)-3-amino-2-(3-methoxybenzyl)propanoic acid (CAS 1260586-92-2)
- 1-(4,5-Dibromothiophene-2-carbonyl)piperidine-4-carboxamide (CAS 870769-18-9)
- 4-chloro-1-[(1-ethyl-3-methyl-1H-pyrazol-4-yl)methyl]-1H-pyrazol-3-amine,HCl (CAS 1431965-09-1)
- 4-(2-Chloroethyl)-N-(3-fluorophenyl)benzenesulfonamide (CAS 1018262-52-6)
- (r)-1-(Anthracen-2-yl)prop-2-en-1-amine (CAS 1213376-01-2)
- 1-Bromo-2-((cyclohexyloxy)methyl)benzene (CAS 498573-44-7)
- 1-Methyl-3-(1-naphthyl)piperazine-2,5-dione (CAS 1214041-05-0)
- Sildenafil Impurity 256 (CAS 1027192-9-2)
- Tirzepatide Impurity 45 (CAS CATO-C4X-324045)
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