S-(2-hydroxyethyl)cysteine CAS 97170-10-0
| CAS No. | 97170-10-0 |
| Molecular Formula | C5H11NO3S |
| Molecular Weight | 165.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 165.21 g/mol gives S-(2-hydroxyethyl)cysteine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
S-(2-hydroxyethyl)cysteine (CAS 97170-10-0), molecular formula C5H11NO3S and molecular weight 165.21 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, S-(2-hydroxyethyl)cysteine is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 165.21 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures S-(2-hydroxyethyl)cysteine under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C5H11NO3S |
| Molecular Weight | 165.21 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1984 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related S Standards
- 2-(2-hydroxyethyl)-1$l^{6},2-thiazolidine-1,1-dione (CAS 1157045-79-8)
- N-(2-Hydroxyethyl)cyclopropanesulfonamide (CAS 1534388-85-6)
- (R)-1-(1-Hydroxyethyl)cyclopropane-1-sulfonamide (CAS 2490187-94-3)
- S-(2-Hydroxyethyl)-L-cysteine (CAS 6367-98-2)
- N-2-(Hydroxyethyl)-L-valine-d4 (Technical grade) (CAS 120398-50-7)
- 4-(1-Hydroxyethyl)benzamide (CAS 1175301-23-1)
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- 1-(6-(1-Hydroxyethyl)pyridin-2-yl)ethanone (CAS 774225-86-4)
Recommended Standards
- Pyrrolidin-3-ylmethanesulfonic acid (CAS 85310-67-4)
- Pyrrolidin-1-ylmethanesulfonic acid (CAS 776265-88-4)
- thieno[2,3-b]pyridin-5-ylmethanol (CAS 376387-77-8)
- pyridazine-3-sulfonamide (CAS 860448-30-2)
- Methyl 2-(4-bromo-1H-pyrazol-1-yl)isonicotinate (CAS 1227954-81-5)
- (E)-N-Cycloheptyl-3-[4-(3-fluoropropoxy)phenyl]-2-propenamide (CAS 477871-24-2)
- 2-(Chloromethyl)-1-(methoxymethyl)-1H-imidazole hydrochloride (CAS 119336-41-3)
- 4-(Pyrazol-1-yl)benzenesulfonic acid (CAS 18336-38-4)
- 5-Chloro-8-phenylimidazo[1,2-a]pyridine (CAS 69214-21-7)
- [2-(1H-Indol-3-yl)-ethyl]-(3,4,5-trimethoxy-benzyl)-amine (CAS 103211-41-2)
- JWH-175 (CAS 619294-35-8)
- Calcium 4-carboxy-2-oxobutanoate (CAS 86248-59-1)
- 5-Chloro-6-(4-chlorophenyl)-2-oxo-1,2-dihydropyridine-3-carboxylic acid (CAS 1708370-79-9)
- Semaglutide impurity 257 (CAS CATO-C4X-2226257)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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