Shanghai Ruifu Chemical Co., Ltd. is the leading manufacturer of D-Cystine (CAS: 349-46-2) with high quality.
D-Cystine is mainly used in pharmaceuticals, peptide synthesis, food additives, biotechnology, cosmetics and etc.
Ruifu Chemical has been supplying amino acids and derivatives more than 15 years.
Ruifu Chemical can provide worldwide delivery, competitive price, excellent service.
Purchase D-Cystine or other products, please contact us by e-mail: alvin@ruifuchem.com
| Chemical Name | D-Cystine |
| Synonyms | D-(+)-Cystine; (H-D-Cys-OH)2; H-D-(Cys)_2-OH; Dextro-Cystine; H-D-Cystine; (+)-3,3'-Dithiobis(2-Aminopropionic Acid); (S,S)-3,3''-Dithiobis(2-Aminopropionic Acid) |
| Stock Status | In Stock, Commercial Production |
| CAS Number | 349-46-2 |
| Molecular Formula | C6H12N2O4S2 |
| Molecular Weight | 240.30 g/mol |
| Melting Point | 265℃(dec.) (lit.) |
| Water Solubility | Insoluble in Water |
| Solubility in HCl | Colorless and Transparent Solution |
| Storage Temperature | Store Long-Term in a Cool and Dry Place |
| COA & MSDS | Available |
| Origin of Product | Shanghai, China |
| Product Categories |
Amino Acids and Derivatives |
| Brand | Ruifu Chemical |
| Items | Specifications | Results |
| Appearance | White to Off-White Crystalline Powder | White Crystalline Powder |
| Specific Rotation [α]20/D | +205.0° - +225.0° (C=1 in 1N HCl) | +210.3° |
| Loss on Drying | ≤0.50% | 0.30% |
| Residue on Ignition | ≤0.10% | 0.04% |
| Iron (Fe) | ≤20ppm | <5ppm |
| Heavy Metals (Pb) | ≤10ppm | <10ppm |
| Assay / Analysis Method | ≥98.5% (Titration) | 99.78% |
| 1H NMR Spectrum | Conforms to Structure | Conforms |
| Conclusion | The product has been tested and complies with the given specifications | |
Package: Fluorinated bottle, Aluminium foil bag, 25kg/cardboard drum, or according to customer's requirement.
Storage Condition: Keep the container tightly closed. Store in a cool, dry (2-8℃) and well-ventilated warehouse away from incompatible substances. Keep away from sunshine; avoid fire and heat sources; avoid moisture.
Shipping: Deliver to worldwide by air, 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.
Risk Codes R36/37/38 - Irritating to eyes, respiratory system and skin.
R22 - Harmful if swallowed
Safety Description S22 - Do not breathe dust.
S24/25 - Avoid contact with skin and eyes.
S37/39 - Wear suitable gloves and eye/face protection
S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36 - Wear suitable protective clothing.
WGK Germany 3
HS Code 2922491990
D-Cystine (CAS: 349-46-2) is the D-enantiomer of cystine. It is an enantiomer of a L-cystine. D-Cystine is a non-proteinogenic amino acid that is composed of two cysteine molecules linked by a disulfide bond.
D-Cystine has potential applications in the food, pharmaceutical and drug development, protein engineering, biotechnology, and cosmetics industries.