Carboxymethoxylamine hemihydrochloride
- CAS NO.：2921-14-4
- Empirical Formula: C2H6ClNO3
- Molecular Weight: 127.53
- MDL number: MFCD00012955
- EINECS: 220-862-3
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-07-27 17:00:41
What is Carboxymethoxylamine hemihydrochloride?
Chemical properties
white to off-white crystalline powder or crystals
The Uses of Carboxymethoxylamine hemihydrochloride
Carboxymethoxylamine hemihydrochloride is a bifunctional linking reagent that undergoes condensation with aldehydes and ketones to form oximes. It can also be used as a potent inhibitor of (pyridoxal 5’-phosphate) PLP-dependent β-lyases.
Definition
ChEBI: (aminooxy)acetic acid hemihydrochloride is the hemihydrochloride salt of (aminooxy)acetic acid. It is a malate-aspartate shuttle (MAS) inhibitor which also inhibits the GABA degradating enzyme 4-aminobutyrate aminotransferase and cystathionine beta-synthetase. It contains an (aminooxy)acetate.
Preparation
Carboxymethylhydroxylamine hemihydrochloride is obtained by reacting O-carboxymethylacetone oxime with hydrochloric acid.
Properties of Carboxymethoxylamine hemihydrochloride
| Melting point: | 156 °C (dec.)(lit.) |
| Density | 1.7848 (rough estimate) |
| refractive index | 1.6500 (estimate) |
| storage temp. | 2-8°C |
| solubility | DMF: 2mg/mL; DMSO: 5mg/mL; PBS (pH 7.2): 5mg/mL |
| form | Crystalline Powder or Crystals |
| color | White to off-white |
| Water Solubility | decomposes |
| BRN | 3680528 |
| InChI | InChI=1S/2C2H5NO3.ClH/c2*3-6-1-2(4)5;/h2*1,3H2,(H,4,5);1H |
| EPA Substance Registry System | Acetic acid, (aminooxy)-, hydrochloride (2:1) (2921-14-4) |
Safety information for Carboxymethoxylamine hemihydrochloride
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. |
Computed Descriptors for Carboxymethoxylamine hemihydrochloride
| InChIKey | KBXIJIPYZKPDRU-UHFFFAOYSA-N |
| SMILES | C(ON)C(=O)O.C(ON)C(=O)O.Cl |
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