3-Chloro-2-oxopropanoic acid CAS 3681-17-2
| CAS No. | 3681-17-2 |
| Molecular Formula | C3H3ClO3 |
| Molecular Weight | 122.51 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 3-Chloro-2-oxopropanoic acid (CAS 3681-17-2), a certified reference material (molecular formula C3H3ClO3, MW 122.51 g/mol) for analytical method development and quality control.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, 3-Chloro-2-oxopropanoic acid is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 122.51 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C3H3ClO3 |
| Molecular Weight | 122.51 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
Related Chloro Standards
- 3-Chloro-3-oxo-propanoic Acid (CAS 51932-41-3)
- 4-Chloro-1,3-dioxolan-2-one (CAS 3967-54-2)
- 3-Chloro-2-methylpropanoic acid (CAS 16674-04-7)
- (R)-3-Chloro-2-methylpropanoic acid (CAS 82340-62-3)
- (S)-3-Chloro-2-methylpropanoic acid (CAS 82340-63-4)
- 1-Chloro-3-hydroxybutan-2-one (CAS 23386-70-1)
- 2-Chloro-2-methylpropanoic acid (CAS 594-58-1)
- 5-chloro-3-methyl-1,2,4-oxadiazole (CAS 67869-91-4)
Recommended Standards
- Palladium(II) oxide (CAS 1314-08-5)
- Diethyl Disulfide (CAS 110-81-6)
- Methyl Chloroglyoxylate (CAS 5781-53-3)
- 8M12K3FU0T 2179-60-4 Methyl propyl disulfide Disulfide, methyl propyl Methyl propyl disulphide Propyl methyl disulfide AI3-38157 CCRIS 3268 2,3-Dithiahexane EINECS 218-551-2 FEMA No. 3201 Methyldithiopropane UNII-8M12K3FU0T (CAS 2179-60-4)
- 3,4-Dibromo-1,4-dimethyl-3,4-dihydroquinolin-2(1H)-one (CAS 91066-08-9)
- 1-(4-Methoxy-3-methylphenyl)ethan-1-ol (CAS 124829-12-5)
- N-(2-(Furan-2-yl)-2-(indolin-1-yl)ethyl)butyramide (CAS 898432-45-6)
- N-[3-(5-amino-4-cyano-1-methyl-1H-pyrazol-3-yl)propyl]acetamide (CAS 1170584-04-9)
- Quinine Hydrochloride (CAS 130-89-2)
- 1,3-Dimethyl-5-phenyl-1H-pyrazole-4-carboxylic acid (CAS 861586-02-9)
- 5-Amino-1-pyridin-3-yl-1H-pyrazole-4-carbonitrile (CAS 650638-16-7)
- 1,1-Bis(4-chlorophenyl)-2-((4-chlorophenyl)thio)ethanol (CAS 252026-54-3)
- Caspofungin EP Impurity A (CAS 1202167-57-4)
- D-Val23-Tirzepatide (CAS CATO-CPTD788911)
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