Methyl 2,4-Dichloro-3-oxobutyrate CAS 4877-84-3
| CAS No. | 4877-84-3 |
| Molecular Formula | C5H6Cl2O3 |
| Molecular Weight | 185.01 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 Methyl 2,4-Dichloro-3-oxobutyrate.
Methyl 2,4-Dichloro-3-oxobutyrate (CAS 4877-84-3), molecular formula C5H6Cl2O3 and molecular weight 185.01 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, Methyl 2,4-Dichloro-3-oxobutyrate is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 185.01 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.
As a certified reference material (CRM), Methyl 2,4-Dichloro-3-oxobutyrate 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 | C5H6Cl2O3 |
| Molecular Weight | 185.01 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 Methyl Standards
- Methyl 3,4-dichloro-4-oxobutanoate (CAS 768401-35-0)
- trans-4,5-dichloro-4,5-dimethyl-1,3-dioxolan-2-one (CAS 116857-05-7)
- 4,5-dichloro-6-methoxy-pyrimidine (CAS 1806367-42-9)
- 2,4-Dichloro-5-methoxypyrimidine (CAS 19646-07-2)
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- 4,5-Dichloro-2,6-difluoropyrimidine (CAS 24178-72-1)
Recommended Standards
- Azilsartan Impurity 174 (CAS 2382294-55-3)
- 2-Bromo-1,1-difluorocyclopentane (CAS 2303705-25-9)
- Olmesartan Impurity 34 (CAS 116857-04-6)
- 1-Bromo-3-(difluoromethyl)cyclobutane (CAS 2241140-79-2)
- Acetyl-(Ala10.11)-RANTES (1-14) amide (human) (H-6262.0001) (CAS 838825-26-6)
- 2-Hydroxy-6-isopropylbenzoic acid (CAS 88846-70-2)
- tert-Butyl (7-chloro-4-iodobenzo[d]thiazol-2-yl)carbamate (CAS 2803283-90-9)
- 2-Hydroxy-5-(piperidin-1-ylsulfonyl)benzoic acid (CAS 91642-62-5)
- Upacicalcet Sodium Impurity 4 (CAS CATO-C4X-33924)
- 1-(2,4-Dichlorobenzoyl)-3-methylpiperazine (CAS 1240575-04-5)
- 2-(8-Chloro-4-oxoquinolin-1(4H)-yl)acetic acid (CAS 1092288-62-4)
- 5-Bromo-4-hydroxypyridine-3-sulfonic acid (CAS 1355216-83-9)
- (1R,3R,4R)-Entecavir HCI (CAS 1367369-76-3（free base）)
- Semaglutide impurity 331 (CAS CATO-C4X-2226231)
Why CATO?
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