Molekula
D-Cysteine
D-Cysteine is a synthetic amino acid used in pharmaceuticals, cosmetics, and biochemical research as a reducing agent and precursor in peptide synthesis. It appears as a white to off-white crystalline powder. CAS: 921-01-7, Molecular Formula: C3H7NO2S, Molecular Weight: 121.16 g/mol. Store at ambient temperature. Signal word: Warning. Molekula supplies D-Cysteine from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
D-Cysteine is a synthetic amino acid used in pharmaceuticals, cosmetics, and biochemical research as a reducing agent and precursor in peptide synthesis. It appears as a white to off-white crystalline powder. CAS: 921-01-7, Molecular Formula: C3H7NO2S, Molecular Weight: 121.16 g/mol. Store at ambient temperature. Signal word: Warning. Molekula supplies D-Cysteine from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Specifications
| Property | Value |
|---|---|
| Appearance | Solid |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Shelf Life | 24 months |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| CAS Number | 921-01-7 |
| Molecular Formula | C3H7NO2S |
| Molecular Weight | 121.16 |
| SMILES | C([C@H](C(=O)O)N)S |
| REACH Code | Y110 |
| HTS Code | 29309092 |
| Tariff Code | 2930901300 |
Safety & GHS
-
Explosive
GHS01
Hazard statements
- H302 Harmful if swallowed
Precautionary statements
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
For research and industrial use only
Documents
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.
Pricing & pack sizes
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is D-Cysteine used for?
D-Cysteine is used in pharmaceuticals, cosmetics, and as a chiral intermediate in organic synthesis.
What is the chemical formula and molecular weight of D-Cysteine?
The formula is C3H7NO2S with a molecular weight of 121.16 g/mol.
How should D-Cysteine be stored?
Store at ambient temperature, protected from moisture and light.
What grade of D-Cysteine is available?
Available in technical and pharmaceutical grade, depending on application needs.
Can Molekula supply D-Cysteine in bulk?
Yes, Molekula offers bulk quantities upon request.
What documentation comes with a D-Cysteine order?
Each order includes a Certificate of Analysis and Safety Data Sheet (SDS).
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.