L-CYSTEIC ACID MONOHYDRATE
Synonym(s):(R)-2-Amino-3-sulfopropionic acid
- CAS NO.：23537-25-9
- Empirical Formula: C3H9NO6S
- Molecular Weight: 187.17
- MDL number: MFCD00149544
- EINECS: 207-861-3
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-07-16 07:06:08
What is L-CYSTEIC ACID MONOHYDRATE?
Chemical properties
white powder
The Uses of L-CYSTEIC ACID MONOHYDRATE
A major metabolite of non-essential amino acid L-Cysteine.
The Uses of L-CYSTEIC ACID MONOHYDRATE
Internal standard for amino acid analysis.
Biochem/physiol Actions
L-cysteic acid is an oxidation product of L-cysteine. L-Cysteic acid, an analogue of cysteine sulfinic acid, may be used in studies of excitatory amino acids in the brain, such as those that bind to cysteine sulfinic acid receptors. L-Cysteic acid is a useful agonist at several rat metabotropic glutamate receptors (mGluRs).
Purification Methods
Likely impurities are cystine and oxides of cysteine. Crystallise it from water by adding 2 volumes of EtOH. When recrystallised from aqueous MeOH it has m 264-266o, and the anhydrous acid has m ~260o(dec). [Chapeville & Formageot Biochim Biophys Acta 26 538 1957, Riordan & Giese Methods Enzymol 47 31 1977, Beilstein 4 IV 3296.]
Properties of L-CYSTEIC ACID MONOHYDRATE
| Melting point: | 267 °C (dec.)(lit.) |
| storage temp. | Room Temperature |
| solubility | H2O: soluble |
| form | Solid |
| color | White to Off-White |
| optical activity | [α]20/D +7.5±0.5°, c = 5% in H2O |
| Water Solubility | Soluble in water. |
| Merck | 14,2780 |
| BRN | 1725495 |
| Stability: | Stable. Combustible. |
| CAS DataBase Reference | 23537-25-9(CAS DataBase Reference) |
Safety information for L-CYSTEIC ACID MONOHYDRATE
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for L-CYSTEIC ACID MONOHYDRATE
| InChIKey | PCPIXZZGBZWHJO-DKWTVANSSA-N |
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