Fmoc-L-Ser(tBu)-OH CAS 71989-33-8
| CAS No. | 71989-33-8 |
| Molecular Formula | C22H25NO5 |
| Molecular Weight | 383.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Fmoc-L-Ser(tBu)-OH (CAS 71989-33-8), molecular formula C22H25NO5 and molecular weight 383.44 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Fmoc-L-Ser(tBu)-OH (C22H25NO5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 383.44 g/mol, it falls into the moderately-high-molecular-weight range. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures Fmoc-L-Ser(tBu)-OH under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C22H25NO5 |
| Molecular Weight | 383.44 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 1 |
Related Fmoc Standards
- Fmoc-Ser-OtBu (CAS 110797-35-8)
- Fmoc-(2R,3R)-3-amino-2-hydroxy-5-methylhexanoic acid (CAS 1217603-26-3)
- Fmoc-(2S,3R)-3-amino-2-hydroxy-5-methylhexanoic acid (CAS 1217779-00-4)
- Fmoc-Nle(6-OMe)-OH (CAS 1823167-86-7)
- Fmoc-(2S,3S)-3-amino-2-hydroxy-5-methylhexanoic acid (CAS 361161-57-1)
- Fmoc-D-Ser(tBu)-OH (CAS 128107-47-1)
- Fmoc-(4S,2RS)-2-ethylthiazolidine-4-carboxylicacid (CAS 1217512-44-1)
- (S)-FMOC-5,5-Dimethyl-1,3-thiazolidine-4-carboxylic acid (CAS 141636-66-0)
Recommended Standards
- Finerenone Impurity 107 (CAS CATO-C4X-2880107)
- L-trans-Epoxysuccinyl-Ile-Pro-OH (CAS 134448-10-5)
- Sacubitril Impurity 30 (CAS CATO-C4X-280930)
- Ceftolozane Impurity 25 (CAS CATO-C4X-240625)
- 1-(2-Bromoethyl)-2-fluoro-4-(trifluoromethyl)benzene (CAS 1027215-80-0)
- 2-((3-Cyano-6-phenyl-4-(p-tolyl)pyridin-2-yl)thio)-N-(p-tolyl)acetamide (CAS 332127-53-4)
- Methyl (2S)-2-(8-chloro-1-naphthyl)-4-oxo-2,3-dihydropyran-5-carboxylate (CAS 2648585-75-3)
- N-(3-(4-amino-2-(trifluoromethyl)phenoxy)phenyl)acetamide (CAS 946740-70-1)
- 3-((4-Ethoxyphenyl)amino)-1-(4-fluorophenyl)propan-1-one (CAS 883793-39-3)
- 4,5-Dibromo-3,6-dibutoxyphthalonitrile (CAS 288303-40-2)
- 2-Chloro-6-(trifluoromethyl)phenylboronic Acid (CAS 851756-52-0)
- Ethyl 2-amino-4-(2,5-dichlorophenyl)-6-(hydroxymethyl)-8-oxo-4,8-dihydropyrano[3,2-b]pyran-3-carboxylate (CAS 898921-46-5)
- N-[3-(Hex-1-yn-1-yl)phenyl]cyclopropanecarboxamide (CAS 861209-80-5)
- Semaglutide Impurity 184 (CAS CATO-C4X-2226184)
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