Molekula
L-Cysteine ethyl ester hydrochloride
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
L-Cysteine ethyl ester hydrochloride is a sulfur-containing amino acid derivative used in biochemical research, peptide synthesis, and as a reducing agent in cell culture and pharmaceutical formulations. It is available in powder form with a molecular weight of 185.67 g/mol, CAS number 868-59-7, and molecular formula HSCH2CH(NH2)COOC2H5 · HCl. Stable at ambient temperature, it requires no special storage conditions. Molekula supplies L-Cysteine ethyl ester hydrochloride from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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25 g — £30.90 per pack ex VAT · £37.08 inc. VAT
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Solid |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 12901788 |
| CAS Number | 868-59-7 |
| IUPAC Name | ethyl (2R)-2-amino-3-sulfanylpropanoate;hydrochloride |
| EC Number | 212-779-6 |
| Molecular Formula | HSCH2CH(NH2)COOC2H5 · HCl |
| Molecular Weight | 185.67 |
| Exact Mass | 185.0277 |
| SMILES | CCOC(=O)[C@H](CS)N.Cl |
| InChIKey | JFKJWWJOCJHMGV-WCCKRBBISA-N |
| InChI | InChI=1S/C5H11NO2S.ClH/c1-2-8-5(7)4(6)3-9;/h4,9H,2-3,6H2,1H3;1H/t4-;/m0./s1 |
| PubChem CID | 2723617 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 29309092 |
| Tariff Code | 2930901600 |
Safety & GHS
Precautionary statements
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Cysteine ethyl ester hydrochloride
- Daiace (TN)
- Ethyl cysteinate hydrochloride
- ethyl cysteine hydrochloride
- Ethyl L-cysteinate hydrochloride
- Ethyl L-cysteine hydrochloride
- L-Cysteine, ethyl ester, hydrochloride (1:1)
- Mucastine
- Taiciscon
- Teincy
Frequently asked questions
What is L-Cysteine ethyl ester hydrochloride used for?
It is commonly used as a reducing agent in biochemical research and as a precursor in the synthesis of peptides and other sulfur-containing compounds.
What is the chemical formula and molecular weight?
The formula is HSCH2CH(NH2)COOC2H5 · HCl with a molecular weight of 185.67 g/mol.
How should L-Cysteine ethyl ester hydrochloride be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade is available?
Available in technical grade; please contact us for custom specifications or higher purity options.
Can Molekula supply it in bulk?
Yes, we can supply L-Cysteine ethyl ester hydrochloride in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA); additional documentation such as MSDS or COO can be provided upon request.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.