4-(Chloromethyl)-7,8-dihydroxy-2H-chromen-2-one CAS 19040-71-2
| CAS No. | 19040-71-2 |
| Molecular Formula | C10H7ClO4 |
| Molecular Weight | 226.61 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 4-(Chloromethyl)-7,8-dihydroxy-2H-chromen-2-one.
4-(Chloromethyl)-7,8-dihydroxy-2H-chromen-2-one (CAS 19040-71-2), molecular formula C10H7ClO4 and molecular weight 226.61 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C10H7ClO4, 4-(Chloromethyl)-7,8-dihydroxy-2H-chromen-2-one contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 226.61 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
CATO manufactures 4-(Chloromethyl)-7,8-dihydroxy-2H-chromen-2-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C10H7ClO4 |
| Molecular Weight | 226.61 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
Related Chloromethyl Standards
- 4-(Chloromethyl)-5,7-dihydroxy-2H-chromen-2-one (CAS 809234-33-1)
- 4-(Chloromethyl)-5,7-dihydroxy-2H-chromen-2-one (CAS 85029-91-0)
- 2-(Chloromethyl)-5,8-dihydroxyquinazolin-4(1H)-one (CAS 117498-06-3)
- 4-[5-(chloromethyl)-1,2,4-oxadiazol-3-yl]-6-methoxypyrimidine (CAS 1602005-91-3)
- 5-(Chloromethyl)-3-[(3-fluorophenyl)methyl]-1,2,4-oxadiazole (CAS 1247475-08-6)
- 2-(Chloromethyl)-5-(5-fluoro-2-methylphenyl)-1,3,4-oxadiazole (CAS 1341523-75-8)
- 5-(chloromethyl)-3-(3-fluoro-4-methylphenyl)-1,2,4-oxadiazole (CAS 929972-84-9)
- 5-(Chloromethyl)-3-(4-fluoro-3-methylphenyl)-1,2,4-oxadiazole (CAS 937629-46-4)
Recommended Standards
- Methyl 5-chloro-3-hydroxybenzofuran-2-carboxylate (CAS 172088-81-2)
- 3-Chloro-7,8-dihydroxy-4-methyl-2H-chromen-2-one (CAS 19149-43-0)
- 3-(7-Chloro-2H-1,3-benzodioxol-5-yl)prop-2-enoic acid (CAS 1633931-69-7)
- 2-Chloro-5-(2,3-difluorophenyl)pyrimidine (CAS 193400-11-2)
- Tert-butyl 4-cyano-2,2,4-trimethyl-3-oxopyrrolidine-1-carboxylate (CAS 2306262-43-9)
- (S)-N,N-Dimethyl-1-(pyrrolidin-2-yl)methanamine (CAS 29618-57-3)
- 5-(Iodomethyl)pyrrolidin-2-one (CAS 5831-75-4)
- 3-Ethynyl-5-fluoroaniline (CAS 1296271-79-8)
- 3-Bromo-2-chloropyridine-4-carboxaldehyde (CAS 1227602-82-5)
- 3-Chloro-6,7-dihydro-5H-pyrrolo[3,4-c]pyridazine (CAS 1341035-79-7)
- 4-Bromobenzenesulfonyl fluoride (CAS 498-83-9)
- Diethyl 6-(2-(1-benzylpiperidin-4-ylidene)hydrazinyl)-2-oxo-1,2-dihydropyridine-3,5-dicarboxylate (CAS 338410-22-3)
- 1-Methyl-4,5,6,7-tetrahydro-1H-benzo[d]imidazole-2-carboxylic acid (CAS 1502565-46-9)
- Semaglutide impurity 289 (CAS CATO-C4X-2226289)
Why CATO?
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