- S-Benzyl-L-cysteine
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- $2.00 / 100kg
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2025-07-01
- CAS:3054-01-1
- Min. Order: 1kg
- Purity: 99%
- Supply Ability: 100kg
- S-Benzyl-L-cysteine
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- $1.00 / 1KG
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2019-07-06
- CAS:3054-01-1
- Min. Order: 1KG
- Purity: 95%-99.99%
- Supply Ability: 1KG-10MT
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| | S-Benzyl-L-cysteine Basic information |
| | S-Benzyl-L-cysteine Chemical Properties |
| Melting point | 214 °C (dec.) (lit.) | | alpha | 26 º (c=0.4, 1N NaOH) | | Boiling point | 379.2±42.0 °C(Predicted) | | density | 1.2079 (rough estimate) | | refractive index | 29 ° (C=1, 1mol/L NaOH) | | storage temp. | Sealed in dry,Room Temperature | | solubility | almost transparency in 1mol/L NaOH | | pka | 2.10±0.10(Predicted) | | form | powder to crystaline | | color | White to Almost white | | Optical Rotation | [α]20/D +23°, c = 2 in 1 M NaOH | | BRN | 1879358 | | CAS DataBase Reference | 3054-01-1(CAS DataBase Reference) | | EPA Substance Registry System | L-Cysteine, S-(phenylmethyl)- (3054-01-1) |
| | S-Benzyl-L-cysteine Usage And Synthesis |
| Chemical Properties | WHITE POWDER | | Uses | detection
peptide synthesis | | reaction suitability | reaction type: solution phase peptide synthesis | | Synthesis | The general procedure for the synthesis of S-benzyl-L-cysteine from L-cysteine hydrochloride and benzyl bromide was as follows: to a rapidly stirred mixture of 2N sodium hydroxide solution (15 mL) and ethanol (35 mL), L-cysteine hydrochloride (1.3 g, 8.2 mmol) and benzyl bromide (0.98 mL, 8.2 mmol) were added sequentially. After the reaction was carried out for 1 h, concentrated hydrochloric acid was slowly added to neutralize the reaction mixture to pH 6-7. Subsequently, the precipitate was collected by filtration and washed sequentially with water, ethanol, and ether to yield S-benzyl-L-cysteine (7) as a white powdery product (1.87 g, 92% yield) with a melting point of 210-212 °C (literature value: 215-216 °C). | | References | [1] European Journal of Medicinal Chemistry, 2012, vol. 55, p. 176 - 187,12
[2] Journal of Pharmaceutical Sciences, 1984, vol. 73, # 4, p. 559 - 561
[3] Organic Preparations and Procedures International, 1991, vol. 23, # 1, p. 93 - 102 |
| | S-Benzyl-L-cysteine Preparation Products And Raw materials |
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