(2R,5S)-4-tert-Butyl 2-methyl 2-isobutyl-5-(thiazol-2-yl)pyrrolidine-2,4-dicarboxylate CAS 1820598-57-9
| CAS No. | 1820598-57-9 |
| Molecular Formula | C18H28N2O4S |
| Molecular Weight | 368.49 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.
(2R,5S)-4-tert-Butyl 2-methyl 2-isobutyl-5-(thiazol-2-yl)pyrrolidine-2,4-dicarboxylate (CAS 1820598-57-9), molecular formula C18H28N2O4S and molecular weight 368.49 g/mol, is a CATO reference standard with documented purity and traceability.
(2R,5S)-4-tert-Butyl 2-methyl 2-isobutyl-5-(thiazol-2-yl)pyrrolidine-2,4-dicarboxylate (C18H28N2O4S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C18H28N2O4S |
| Molecular Weight | 368.49 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Recommended Standards
- 4-(Hydroxymethyl)-1-((2-(piperidin-1-yl)ethyl)amino)-9H-thioxanthen-9-one (CAS 16140-27-5)
- (2-((2,5-Dimethylbenzyl)thio)-4,5-dihydro-1H-imidazol-1-yl)(2-ethoxyphenyl)methanone (CAS 851804-35-8)
- N-Desmethyl Eletriptan (CAS 153525-55-4)
- 1-(4-((5-(tert-Butyl)-2-ethoxyphenyl)sulfonyl)piperazin-1-yl)ethan-1-one (CAS 942788-52-5)
- H-Lys(Aloc)-OH (CAS 6298-03-9)
- L-Psicose (CAS 16354-64-6)
- 4-Isopropylisoxazole (CAS 98196-66-8)
- 4-[(2,2,2-trifluoroethoxy)methyl]piperidine hydrochloride (CAS 1193387-27-7)
- 4-Carbomethoxytetrahydro-3-thiophenone 9 (CAS 22097-90-1)
- N-(4-Bromo-2-chlorophenyl)benzamide (CAS 902091-22-9)
- Colchicine-d3 (CAS 1217625-62-1)
- (1-(2,6-Dichlorophenyl)-4-isopropyl-1H-1,2,3-triazol-5-yl)methyl methanesulfonate (CAS 959800-76-1)
- Vonoprazan Impurity 201 (CAS CATO-C4X-1020201)
- Peptide-GMF (CAS CATO-CPTD788469)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com