Shanghai Ruifu Chemical Co., Ltd. is the leading manufacturer of Boc-L-Cysteine (Boc-Cys-OH) (CAS: 20887-95-0) with high quality. Ruifu supplys a series of amino acids. We can provide worldwide delivery, competitive price, small and bulk quantities available. Purchase Boc-L-Cysteine, Please contact: alvin@ruifuchem.com
| Chemical Name | Boc-L-Cysteine |
| Synonyms | Boc-Cys-OH; Boc-L-Cys-OH; N-Boc-L-Cysteine; N-α-t.-Boc-L-Cysteine; N-[(tert-Butyloxy)carbonyl]-L-Cysteine; (R)-2-[(tert-Butoxycarbonyl)amino]-3-Mercaptopropanoic Acid |
| Stock Status | In Stock |
| CAS Number | 20887-95-0 |
| Molecular Formula | C8H15NO4S |
| Molecular Weight | 221.27 g/mol |
| Melting Point | 66.0 to 70.0℃ |
| Density | 1.2±0.1 g/cm3 |
| Sensitive | Air Sensitive, Heat Sensitive |
| Storage Temp. | Cool & Dry Place (2~8℃) |
| COA & MSDS | Available |
| Category | Boc-Amino Acids |
| Brand | Ruifu Chemical |
| Safety Statements | 24/25 - Avoid contact with skin and eyes. | ||
| WGK Germany | 3 | HS Code | 2922491990 |
| Items | Inspection Standards | Results |
| Appearance | White Crystalline Powder | Complies |
| Specific Rotation [α]20/D | +8.0°±1.5° (C=1 in EtOH) |
+8.5° |
| Melting Point | 66.0 to 70.0℃ | Complies |
| Assay / Analysis Method | 98.5~100.5% (by Titration) | 99.36% |
| Infrared Spectrum | Conforms to Structure | Complies |
| NMR Spectrum | Conforms to Structure | Complies |
| Conclusion | The product has been tested & complies with the specifications | |
Package: Fluorinated Bottle, Aluminium foil bag, 25kg/Cardboard Drum, or according to customer's requirement.
Storage Condition: Store in sealed containers at cool and dry (2~8℃) warehouse away from incompatible substances. Protect from light and moisture.
Shipping: Deliver to worldwide by FedEx / DHL Express. Provide fast and reliable delivery.
How to Purchase? Please contact Dr. Alvin Huang: sales@ruifuchem.com or alvin@ruifuchem.com
15 Years Experience? We have more than 15 years of experience in the manufacture and export of a wide range of high quality pharmaceutical intermediates or fine chemicals.
Main Markets? Sell to domestic market, North America, Europe, India, Korea, Japanese, Australia, etc.
Advantages? Superior quality, affordable price, professional services and technical support, fast delivery.
Quality Assurance? Strict quality control system. Professional equipment for analysis include NMR, LC-MS, GC, HPLC, ICP-MS, UV, IR, OR, K.F, ROI, LOD, MP, Clarity, Solubility, Microbial limit test, etc.
Samples? Most products provide free samples for quality evaluation, shipping cost should be paid by customers.
Factory Audit? Factory audit welcome. Please make an appointment in advance.
MOQ? No MOQ. Small order is acceptable.
Delivery Time? If within stock, three days delivery guaranteed.
Transportation? By Express (FedEx, DHL), by Air, by Sea.
Documents? After sales service: COA, MOA, ROS, MSDS, etc. can be provided.
Custom Synthesis? Can provide custom synthesis services to best fit your research needs.
Payment Terms? Proforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by T/T (Telex Transfer), PayPal, Western Union, etc.
Boc-L-Cysteine (Boc-Cys-OH) (CAS: 20887-95-0) is the protected form of L-Cysteine, a non-essential α-amino acid that is biosynthesized in humans.
Boc-amino acid, used in peptide synthesis, reaction type: Boc solid-phase peptide synthesis. Used as an organic synthesis intermediate, pharmaceutical intermediate, biochemical reagent or chemical reagent.
Boc-L-Cysteine is a high performance liquid chromatography (HPLC) grade chromatographic solvent. Chiral derivatizing agent used together with OPA for assaying the enantiomeric purity of amino acids.
Boc-L-Cysteine is a precursor of L-Cysteine, which is the rate-limiting amino acid in the production of glutathione. It is obtained by incubating L-Cysteine with allyl bromide and hydrochloric acid.