2-((Carboxymethyl)thio)succinic acid CAS 99-68-3
| CAS No. | 99-68-3 |
| Molecular Formula | C6H8O6S |
| Molecular Weight | 208.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2-((Carboxymethyl)thio)succinic acid (CAS 99-68-3), molecular formula C6H8O6S and molecular weight 208.19 g/mol, is a CATO reference standard with documented purity and traceability.
2-((Carboxymethyl)thio)succinic acid (C6H8O6S) contains a carbohydrate-derived structure, a sulfone group. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C6H8O6S |
| Molecular Weight | 208.19 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Sulfur Atoms | 1 |
Related Carboxymethyl Standards
- Nε-(1-Carboxymethyl)-L-lysine-d4 (CAS 936233-18-0)
- 2-[(carboxymethyl)[2-(methylsulfanyl)ethyl]amino]acetic acid (CAS 104614-53-1)
- 2-[(Carboxymethyl)(methyl)amino]benzoic acid (CAS 21716-67-6)
- 4-((Carboxymethyl)(methyl)amino)benzoic acid (CAS 883290-81-1)
- 2-(Carboxymethyl)-6-methoxybenzoic acid (CAS 1137-31-1)
- 2-(Carboxymethyl)-3-methoxybenzoic Acid (CAS 69643-20-5)
- 2-(Carboxymethyl)-4-methoxybenzoic acid (CAS 68294-03-1)
- 2-[4-(carboxymethyl)phenoxy]acetic acid (CAS 52299-08-8)
Recommended Standards
- 1-Oxo-1-phenyl-1phosphinan-4-one (CAS 38707-15-2)
- 2-(Dimethylamino)-7-fluoro-4H-benzo[d][1,3]oxazin-4-one (CAS 866143-02-4)
- 1-Amino-3-(3-Fluorophenyl)Pyrrolidine-2,5-Dione (CAS 74208-85-8)
- 2,3-Dihydro-7-mercapto-2-oxobenzimidazole-5-carboxylic acid (CAS 548458-12-4)
- Propanedioic acid, 2-(1-methylbutyl)-2-(2-propen-1-yl)-, 1,3-diethyl ester (CAS 6285-59-2)
- Methyl 5-cyano-6-methoxy-2-oxo-1,2-dihydropyridine-4-carboxylate (CAS 130747-62-5)
- 2-Chloro-N-propylbenzenemethanamine (CAS 807343-03-9)
- 1-(3-((Ethylamino)methyl)pyrrolidin-1-yl)ethanone (CAS 1353971-62-6)
- 2-(Ethylthio)-4,5-dihydro-1H-imidazole (CAS 7320-60-7)
- [(3-chlorophenyl)methyl]hydrazine (CAS 51421-12-6)
- 6,8-Diiodo-3,4-dihydro-2h-pyrano[3,2-b]pyridine (CAS 1222533-94-9)
- 3-Chloro-6-fluoro-1-methoxyisoquinoline (CAS 1443759-45-2)
- Biotin-benzyl-tetrazine 95% (CAS 1705605-73-7)
- Liraglutide(13-31)TFA Salt (CAS CATO-C4X-19929)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com