09T3687932 4755-81-1 Methyl 2-chloroacetoacetate Butanoic acid, 2-chloro-3-oxo-, methyl ester EINECS 225-286-6 UNII-09T3687932 CAS 4755-81-1
| CAS No. | 4755-81-1 |
| Molecular Formula | C5H7ClO3 |
| Molecular Weight | 150.56 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 09T3687932 4755-81-1 Methyl 2-chloroacetoacetate Butanoic acid, 2-chloro-3-oxo-, methyl ester EINECS 225-286-6 UNII-09T3687932.
CATO supplies 09T3687932 4755-81-1 Methyl 2-chloroacetoacetate Butanoic acid, 2-chloro-3-oxo-, methyl ester EINECS 225-286-6 UNII-09T3687932 (CAS 4755-81-1), a certified reference material (molecular formula C5H7ClO3, MW 150.56 g/mol) for analytical method development and quality control.
09T3687932 4755-81-1 Methyl 2-chloroacetoacetate Butanoic acid, 2-chloro-3-oxo-, methyl ester EINECS 225-286-6 UNII-09T3687932 (C5H7ClO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 09T3687932 4755-81-1 Methyl 2-chloroacetoacetate Butanoic acid, 2-chloro-3-oxo-, methyl ester EINECS 225-286-6 UNII-09T3687932 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C5H7ClO3 |
| Molecular Weight | 150.56 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 |
Recommended Standards
- 4-chloro-acetoaceticacimethylester (CAS 32807-28-6)
- (S)-(-)-2-Acetoxypropionyl Chloride (CAS 36394-75-9)
- Tetrahydrofuran-3-yl carbonochloridate (CAS 98021-98-8)
- (R)-(+)-2-Acetoxypropionyl Chloride (CAS 53636-19-4)
- 4-(2-Chloro-5-nitrophenyl)-1,4-dihydro-[1,3,5]triazino[1,2-a]benzimidazol-2-amine (CAS 774560-40-6)
- 3,3,4,4,5,5,6,6,7,7,8,8,9,9,9-Pentadecafluoro-1-nonene (CAS 25431-45-2)
- 7-Hydroxy-3-methyl-1H,3H,3aH,4H,5H-[1,3]oxazolo[3,4-a]quinolin-1-one (CAS 1824633-17-1)
- 1-(4-Chlorophenoxy)-3,3-dimethylbutan-2-one (CAS 24473-06-1)
- Uranyl Acetate (Oxyacetate Uranium) (CAS 541-09-3)
- 2-Nitro-N-(4-(N-(pyrimidin-2-yl)sulfamoyl)phenyl)benzamide (CAS 455886-80-3)
- 5-(2-Methoxyethoxy)-2-nitrobenzoicacid (CAS 78361-13-4)
- tert-Butyl (4-(2-aminoethoxy)cyclohexyl)carbamate (CAS 1353983-21-7)
- Ethyl 2,2-Dimethyl-3-(4-chlorosulfonylphenyl)propionate (CAS 887355-04-6)
- Semaglutide impurity 61 (CAS CATO-C4X-222661)
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