S-Benzyl-L-cysteine
- Product Name
- S-Benzyl-L-cysteine
- CAS No.
- 3054-01-1
- Chemical Name
- S-Benzyl-L-cysteine
- Synonyms
- H-CYS(BZL)-OH;H-L-CYS(BZL)-OH;(S)-BENZYL-L-CYS;CYSTEINE(BZL)-OH;s-benzylcysteine;BENZYL-S-CYSTEINE;Benzylcysteine,98%;D-S-Benzylcysteine;L-S-benzylcysteine;S-BENZYL-L-CYSTEINE
- CBNumber
- CB5417063
- Molecular Formula
- C10H13NO2S
- Formula Weight
- 211.28
- MOL File
- 3054-01-1.mol
S-Benzyl-L-cysteine Property
- 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
- form
- powder to crystaline
- pka
- 2.10±0.10(Predicted)
- color
- White to Almost white
- optical activity
- [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)
Safety
- Risk Statements
- 36/37/38
- Safety Statements
- 22-24/25-28-26
- WGK Germany
- 3
- TSCA
- Yes
- HS Code
- 29309090
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
N-Bromosuccinimide Price
- Product number
- B19800
- Product name
- S-Benzyl-L-cysteine
- Purity
- 97%
- Packaging
- 10g
- Price
- $59.26
- Updated
- 2025/07/31
- Product number
- B0865
- Product name
- S-Benzyl-L-cysteine
- Purity
- >98.0%(HPLC)(T)
- Packaging
- 1g
- Price
- $14
- Updated
- 2021/12/16
- Product number
- B0865
- Product name
- S-Benzyl-L-cysteine
- Purity
- >98.0%(HPLC)(T)
- Packaging
- 5g
- Price
- $18
- Updated
- 2023/06/20
- Product number
- B0865
- Product name
- S-Benzyl-L-cysteine
- Purity
- >98.0%(HPLC)(T)
- Packaging
- 25g
- Price
- $67
- Updated
- 2021/12/16
- Product number
- B234505
- Product name
- S-Benzyl-L-cysteine
- Packaging
- 100mg
- Price
- $75
- Updated
- 2021/12/16
S-Benzyl-L-cysteine Chemical Properties,Usage,Production
Chemical Properties
WHITE POWDER
Uses
detection
peptide synthesis
reaction suitability
reaction type: solution phase peptide synthesis
Synthesis
52-89-1
100-39-0
3054-01-1
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
Raw materials
Preparation Products
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View Lastest Price from S-Benzyl-L-cysteine manufacturers
- Product
- S-Benzyl-L-cysteine 3054-01-1
- Price
- US $2.00-5.00/kg
- Min. Order
- 1kg
- Purity
- 99%
- Supply Ability
- 100kg
- Release date
- 2025-06-30
- Product
- S-Benzyl-L-cysteine 3054-01-1
- Price
- US $1.00/KG
- Min. Order
- 1KG
- Purity
- 95%-99.99%
- Supply Ability
- 1KG-10MT
- Release date
- 2019-05-23