Fmoc-D-2-amino-4-(ethylthio)butyric acid CAS 1374669-68-7
| CAS No. | 1374669-68-7 |
| Molecular Formula | C21H23NO4S |
| Molecular Weight | 385.48 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Fmoc-D-2-amino-4-(ethylthio)butyric acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Fmoc-D-2-amino-4-(ethylthio)butyric acid (CAS 1374669-68-7), molecular formula C21H23NO4S and molecular weight 385.48 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C21H23NO4S, Fmoc-D-2-amino-4-(ethylthio)butyric acid contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 385.48 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C21H23NO4S |
| Molecular Weight | 385.48 g/mol |
| 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.) | 1991 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Fmoc Standards
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- Fmoc-Disc-OH (CAS 204320-59-2)
- Fmoc-AEEAc-OH (CAS 166108-71-0)
- Fmoc-S-carbamoyl-L-cysteine (CAS 1354488-29-1)
- 286460-73-9 Fmoc-Met-OH-1-13C L-Methionine-1-13C, N-Fmoc N-(9-Fluorenylmethoxycarbonyl)-L-methionine-1-13C (CAS 286460-73-9)
- 934183-50-3 Fmoc-Met-OH-15N L-Methionine-15N, N-Fmoc N-(9-Fluorenylmethoxycarbonyl)-L-methionine-15N (CAS 934183-50-3)
Recommended Standards
- (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-5-(methylthio)pentanoic acid (CAS 1354752-81-0)
- N-(((9H-Fluoren-9-yl)methoxy)carbonyl)-S-ethylhomocysteine (CAS 1396988-59-2)
- N-(4-(4-(Cyclopropanecarbonyl)-1,4-diazepan-1-yl)phenyl)-4-methyl-1,2,3-thiadiazole-5-carboxamide (CAS 1219913-12-8)
- tert-Butyl 2-(2,2-dimethyloxazolidin-3-yl)-2-(tosyloxy)acetate (CAS 140645-28-9)
- 1,4-Bis(4,5-diphenyl-1H-imidazol-2-yl)benzene (CAS 4051-59-6)
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- 7-Chlorothiazolo[5,4-d]pyrimidine-2-thiol (CAS 1707571-66-1)
- (2,3,5,6-Tetrachlorophenyl)boronic acid (CAS 1310930-82-5)
- 2-(Pyridin-3-yl)-5-(trifluoromethyl)-1H-indole-3-carbaldehyde (CAS 591243-37-7)
- 2,2-dimethylbut-3-en-1-yl methanesulfonate (CAS 70074-03-2)
- (3,4-Dichlorophenethyl)hydrazine hydrochloride (CAS 21085-57-4)
- 2-(Morpholinomethyl)-3,5,6,7-tetrahydro-4H-cyclopenta[4,5]thieno[2,3-d]pyrimidin-4-one (CAS 735342-31-1)
- Menaquinone impurity 35 (CAS CATO-C4X-207635)
- Semaglutide Impurity 163 (x TFA Salt) (CAS CATO-C4X-2226163)
Why CATO?
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