L-Cysteine methyl ester hydrochloride(CAS 18598-63-5)
| Purity | Grade | Package | Stock | Price | Quantity |
| 98% | RG | 5G | In Stock | 4 USD
|
|
| 98% | RG | 25G | In Stock | 7 USD
|
|
| 98% | RG | 100G | In Stock | 20 USD
|
|
| 98% | RG | 500G | In Stock | 66 USD
|
|
| 98% | RG | 2.5KG | In Stock | 318 USD
|
|
| 98% | RG | 10KG | In Stock | 1254 USD
|
|
|
|||||
Your region is eligible for ordering. Available NMR Spectrum
Verified In Stock
Fast Shipping ISO 9001
Quality System
Applications of 18598-63-5
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Chiral intermediate for synthesis of pharmaceuticals, including antibiotics (e.g., cephalosporins), antiviral agents, and antioxidants | Used as a chiral auxiliary in asymmetric synthesis and peptide coupling reactions; hydrolyzed to L-cysteine under mild alkaline conditions |
| Food | Precursor for flavor enhancers, employed in the preparation of thermal reaction flavors (e.g., meat-type flavors) | Heated with reducing sugars in the Maillard reaction to release H₂S and sulfur-containing heterocyclic compounds, imparting roasted meat aroma |
| Cosmetics | Stabilizing carrier for active ingredients, used in sustained-release formulations of thiol-containing functional products | Thiol group protected via esterification to reduce oxidative sensitivity; active L-cysteine released upon enzymatic hydrolysis by esterases on the skin surface |
| Biochemical Research | Reagent for site-specific modification and crosslinking of proteins/peptides | Applied for selective thiol alkylation, disulfide bond reformation, or fluorescent labeling (e.g., reaction with maleimide derivatives) |
Physical and chemical properties of 18598-63-5
Boiling Point |
197.2ºC at 760 mmHg |
|---|---|
BRN |
3685824 |
Density |
1.232 (estimate) |
Exact Mass |
171.012070 |
Flash Point |
73.1ºC |
Index of Refraction |
-2.5 ° (C=20, MeOH) |
LogP |
0.91880 |
Melting Point |
142 °C (dec.)(lit.) |
Merck |
13,5809 |
Molecular Formula |
C4H10ClNO2S |
Molecular Weight |
171.646 |
optical activity |
[α]20/D 1.8°, c = 10 in methanol |
PSA |
91.12000 |
Solubility |
DMSO (Slightly), Methanol, Water (Slightly) |
Specific rotation |
-2.25 º (c=5, 1 N HCl) |
Stability |
Stable. Incompatible with strong oxidizing agents. |
Storage condition |
Keep in dark place,Sealed in dry,Room Temperature |
Vapour Pressure |
0.384mmHg at 25°C |
Water Solubility |
Soluble in water |
Spectrums of 18598-63-5
1.The NMR spectrum displayed on the page is a pre-sale reference spectrum and may differ from that of the actual received batch.
2.The accompanying documentation will include the NMR spectrum and purity analysis data for the shipped batch.
Cas:52-90-4
Q&A for CAS 18598-63-5
1. How can I verify product quality?
Every batch of our Chemical Reagents is tested to meet ISO 9001 standards. We provide COA & NMR & SDS Provided with each shipment. Batch COA available for verification, and third-party retesting is supported. A full refund is offered if our data is incorrect.
2. What is the delivery time?
Orders from Ready stock / In stock items typically Ships Tomorrow via Fast Shipping via FedEx/DHL/UPS. International deliveries usually arrive within 7 business days, subject to customs clearance.
3. What if the received product doesn’t meet quality standards?
If your Lab Grade Chemical Reagents do not match the Batch COA available, we will issue a replacement or a full refund upon verification.
4. Are hazardous labels included? How is safe shipping ensured?
Hazardous products are labeled and packaged following international regulations. We provide SDS Provided with all hazardous shipments to ensure safe and compliant transport.
5. Do you offer technical support?
Yes. Our Lab Supplier team is available to assist with questions about product usage, storage, Lab Grade requirements, applications, and more.
6. Are volume discounts available?
Yes. For bulk orders of Chemical Reagents, we offer competitive pricing. Submit a quotation request and we’ll provide a tailored offer.
7. Do you provide samples?
Yes, samples are available for selected Lab Grade products. Please submit a request to confirm availability and specifications.
8. Do you have products in stock?
Yes. Items labeled In stock / Ready stock on our website are available for immediate shipment, usually within 1–2 business days. Large packs or custom specifications require lead time confirmation.
9. Can you customize purity or packaging?
Yes. We support customization of Lab Grade purity, packaging size, and special testing requirements. Share your needs and we’ll provide a tailored solution.
10. Is the COA consistent with the shipped batch?
Yes. Batch COA available matches the actual shipment. COAs shown online are for reference or from previous batches.
11. Do you support long-term supply agreements?
Yes. We offer Lab Supplier services for stable batch consistency, pricing agreements, and safety stock for long-term customers to ensure uninterrupted supply.
12. What payment methods do you accept?
We accept Pay Local Currency via bank transfer (T/T), PayPal, and other methods. Credit terms are available for qualified long-term partners.
Download SDS of 18598-63-5
Pictograms |
 |
|---|---|
Signal Word |
Warning |
Hazard Statements |
H315 Causes skin irritation H319 Causes serious eye irritation H335 May cause respiratory irritation |
Safety Data Sheet |
Download COA of 18598-63-5
Operate under the ISO 9001 system
