Shanghai Ruifu Chemical Co., Ltd. is one of the leading suppliers of L-Cysteine Ethyl Ester Hydrochloride (H-Cys-OEt·HCl) (CAS: 868-59-7) with high quality. Ruifu Chemical supplys a series of amino acids and derivatives. Our products are popular at home and abroad and are highly appraised by customers. We can provide COA, worldwide delivery, small and bulk quantities available. If you are interested in L-Cysteine Ethyl Ester Hydrochloride, Please contact: alvin@ruifuchem.com
| Chemical Name |
L-Cysteine Ethyl Ester Hydrochloride |
| Synonyms |
H-Cys-OEt·HCl; L-Cys-OEt·HCl; L-Cysteine Ethyl Ester HCl; L-Cysteine Ethyl Ester Monohydrochloride; Ethyl Cysteinate HCl; Ethyl L-Cysteinate Hydrochloride; (R)-Ethyl 2-Amino-3-Mercaptopropanoate Hydrochloride; Ethyl (R)-2-Amino-3-Mercaptopropionate Monohydrochloride |
| Stock Status |
In Stock, Production Capacity 20 Tons per Month |
| CAS Number |
868-59-7 |
| Molecular Formula |
C5H11NO2S·HCl |
| Molecular Weight |
185.67 |
| Melting Point |
120.0 to 128.0℃ |
| Density |
1.391 |
| Sensitive |
Hygroscopic. Heat Sensitive |
| Water Solubility |
Very Soluble in Water, Almost Transparency |
| Solubility |
Freely Soluble in Methanol and Ethanol. Practically Insoluble in Chlorform |
| Storage Temp. |
Sealed in Dry, Store at Room Temperature |
| COA & MSDS |
Available |
| Classification |
Amino Acids & Derivatives |
| Brand |
Ruifu Chemical |
| Hazard Codes |
Xi - Irritant |
RTECS |
HA1820000 |
| Risk Statements |
36/37/38 |
TSCA |
Yes |
| Safety Statements |
24/25-36-26 |
HS Code |
2930909099 |
| WGK Germany |
2 |
|
|
| Items |
Inspection Standards |
Results |
| Appearance |
White Crystals or Crystalline Powder; Acid Taste |
Conforms |
| Identification |
Infrared Absorption Spectrum |
Conforms |
| Specific Rotation [α]20/D |
-10.0° to -13.0°(C=8 in 1mol/L HCl) |
-11.7° |
| State of Solution (Transmittance) |
Clear and Colorless ≥98.0% |
98.3% |
| Chloride (Cl) |
18.80~19.28% |
Conforms |
| Sulfate (SO4) |
≤0.010% |
<0.010% |
| Heavy Metals (Pb) |
≤10ppm |
<10ppm |
| Arsenic (As2O3) |
≤1.0ppm |
<1.0ppm |
| Related Substances A |
≤1.50% |
Conforms |
| Related Substances B |
≤0.50% |
Conforms |
| Loss on Drying |
≤0.30% |
0.20% |
| Residue on Ignition (Sulfated) |
≤0.10% |
0.08% |
| Assay |
99.0 to 101.0% |
99.5% |
| pH Value |
2.5 to 3.5 (1.0g in 20ml of H2O) |
2.7 |
| Conclusion |
This Product by Inspection Accords with the Standard of AJI97 |
| Main Uses |
Food Additives, Cosmetic, Pharmaceutical Industries |
L-Cysteine Ethyl Ester Monohydrochloride, when dried, contains not less than 99.0 percent and not more than 101.0 percent of L-Cysteine Ethyl Ester Monohydrochloride (C5H11NO2S·HCl).
Description: White crystals or crystalline Powder, acid taste
Very soluble in water, freely soluble in methanol and in ethanol. practically insoluble in chlorform
The solution, when allow to stand, slowly decomposes to evolve an odor of hydrogen sulfide.
Solubility (H2O, g/100g): about 100 (25℃)
Identification: (1) Determine the infrared absorption spectrum of Cysteine Ethylester Monohydrochloride as directed in the potassium bromide disk method under the Infrared Spectrophotometry, and compare the spectrum with the Reference Spectrum: both spectra exhibit similar intensities of absorption at the same wave numbers.
(2) A solution of L-Cysteine Ethyl Ester Monohydrochloride (1 in 20) responds to the Qualitative Tests (1) for chloride.
Specific Rotation [α]20/D: Dried sample, C=8, 1mol/L HCl
State of Solution (Transmittance): 0.5g in 20ml of H2O, spectrophotometer, 430nm, 10mm cell thickness.
Chloride (Cl): Dried sample, 370mg, B-2
Sulfate (SO4): 2.4g, (1), ref: 0.50ml of 0.01mol/L H2SO4
Heavy Metals (Pb): 2.0g, (1), ref: 2.0ml of Pb Std. (0.01mg/ml)
Arsenic (As2O3): 2.0g, (1), ref: 2.0ml of As2O3 Std.
Related Substances: Liquid chromatography
Loss on Drying: In vacuum, P2O5, at room temperature for 5 hours.
Residue on Ignition (Sulfated): AJI Test 13
Assay: Dried sample, 250mg, 0.05ml/L I2 1ml=18.567mg C5H11NO2S·HCl
pH: 1.0g in 20ml of H2O
Recommended storage limit and condition: Preseved tight containers at controlled room temperature (1/2 years).
Package: Fluorinated Bottle, 25kg/bag, 25kg/Cardboard Drum, or according to customer's requirement.
Storage Condition: Hygroscopic. Store in sealed containers at cool, dry and ventilated warehouse away from incompatible substances. Store away from moisture and oxidizing agents.
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.
L-Cysteine Ethyl Ester Hydrochloride (H-Cys-OEt·HCl) (CAS: 868-59-7) is the hydrochloride form of ethyl ester of L-Cysteine (C995000) which is a non-essential amino acid commonly used in food additive, cosmetic, pharmaceutical industries. Also used for biochemical reagents.
1. For the treatment of radioactive drug poisoning, heavy metal poisoning, toxic hepatitis, serum sickness, etc., and can prevent liver necrosis. Its usage and dosage: intramuscular injection, 100~200mg each time, 1~2 times a day.
2. Used in cosmetics for the perm fine, sunscreen, hair growth perfume, hair care fine.
3. As a food additive, used in bread to promote the formation of gluten and promote fermentation, mold, prevent oxidation. For natural fruit juice, to prevent oxidation and color change of vitamin C.