| Company Name: |
Energy Chemical |
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| Email: |
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- (Fmoc-Cys-OH)2
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2026-09-15
- CAS:135273-01-7
- Min. Order: 1kg
- Purity: 98%
- Supply Ability: 1T
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| | (Fmoc-Cys-OH)2 Basic information |
| Product Name: | (Fmoc-Cys-OH)2 | | Synonyms: | (FMOC-CYS)2;N-ALPHA,N-ALPHA-BIS-FMOC-L-CYSTINE;N,N'-DI-9-FLUORENYLMETHOXYCARBONYL-L-CYSTINE;(Fmoc-Cys-OH)2 (Disulfide bond);Nα,Nα-Bis-FMoc-L-cystine;N,N'-Bis-FMoc-L-cystine;Nalpha,Nalpha-Bis-Fmoc-L-cystine(Disulfide bond);(Fmoc-L-Cys-OH)2 | | CAS: | 135273-01-7 | | MF: | C36H32N2O8S2 | | MW: | 684.78 | | EINECS: | | | Product Categories: | | | Mol File: | 135273-01-7.mol |  |
| | (Fmoc-Cys-OH)2 Chemical Properties |
| Melting point | 189-201 °C | | Boiling point | 925.8±65.0 °C(Predicted) | | density | 1.412 | | Fp | 513.7℃ | | storage temp. | Sealed in dry,2-8°C | | pka | 3.06±0.10(Predicted) |
| Safety Statements | 24/25 | | HS Code | 29309090 |
| | (Fmoc-Cys-OH)2 Usage And Synthesis |
| Chemical Properties | White to off-white powder | | Synthesis | The general procedure for the synthesis of Fmoc-L-cystine from L-cystine and 9-fluorenylmethyl chloroformate was as follows: sodium carbonate (4.6 g, 43.6 mmol) and L-cystine (5.0 g, 20.8 mmol) were dissolved in deionized water (200 mL). The reaction system was cooled to 10 °C. Methyl 9-fluorenyl chloroformate (Fmoc-Cl, 11.85 g, 45.8 mmol) was dissolved in 1,4-dioxane (80 mL) and this solution was slowly added dropwise to the above aqueous L-cystine solution. The reaction mixture was stirred continuously at 10 °C for 2 h, followed by natural warming to room temperature. Upon completion of the reaction, a thick white precipitate was produced, which was drained through a sintered glass funnel. The resulting solid was washed with ether (50 mL) and ground, followed by drying under vacuum for 48 hours. The final N,N'-bis(Fmoc)-L-cystine (14.0 g, 98% yield) was obtained as a white powdery product. | | References | [1] Patent: US2007/37963, 2007, A1. Location in patent: Page/Page column 11-12; Figure 4 |
| | (Fmoc-Cys-OH)2 Preparation Products And Raw materials |
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