Methyl 5-(chlorosulfonyl)-3-fluoro-2-methoxybenzoate CAS 1375474-70-6
| CAS No. | 1375474-70-6 |
| Molecular Formula | C9H8ClFO5S |
| Molecular Weight | 282.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Methyl 5-(chlorosulfonyl)-3-fluoro-2-methoxybenzoate (CAS 1375474-70-6), molecular formula C9H8ClFO5S and molecular weight 282.67 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Methyl 5-(chlorosulfonyl)-3-fluoro-2-methoxybenzoate (C9H8ClFO5S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 282.67 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), Methyl 5-(chlorosulfonyl)-3-fluoro-2-methoxybenzoate 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 | C9H8ClFO5S |
| Molecular Weight | 282.67 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | F/Cl-containing |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 3-[4-(chlorosulfonyl)-2-fluorophenoxy]propanoic acid (CAS 1016831-69-8)
- Methyl 2-(4-(chlorosulfonyl)-2-fluorophenoxy)acetate (CAS 1291488-79-3)
- methyl 5-(chlorosulfonyl)-2-fluoro-4-methoxybenzoate (CAS 2060056-99-5)
- Ethyl 3-(chlorosulfonyl)-4,5-dimethylthiophene-2-carboxylate (CAS 2855998-85-3)
- ethyl 5-(chlorosulfonyl)-4-fluoro-2-methylbenzoate (CAS 1565451-30-0)
- 3-(Chlorosulfonyl)-2,6-dimethoxybenzoic acid (CAS 874841-03-9)
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- Methyl 5-(chlorosulfonyl)-1-naphthoate (CAS 141952-09-2)
Recommended Standards
- 2-Chloro-2,2-difluoro-1-(4-phenoxyphenyl)ethan-1-one (CAS 1352225-84-3)
- 5-Chloro-2-((3,5-difluorobenzyl)oxy)benzaldehyde (CAS 1443324-71-7)
- 5-Chloro-2-((3,4-difluorobenzyl)oxy)benzaldehyde (CAS 1443351-77-6)
- 5-Chloro-2-((2,5-difluorobenzyl)oxy)benzaldehyde (CAS 1275832-49-9)
- 5-Chloro-3-cyclohexyl-1-methyl-1H-pyrazole (CAS 61199-35-7)
- 7-Chloro-3-phenyl-1H-pyrazolo[4,3-d]pyrimidine (CAS 1211588-84-9)
- (2S,3S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-2-hydroxy-3-(p-tolyl)propanoic acid (CAS 959576-02-4)
- Methyl ((2-methylthiazol-4-yl)methyl)valinate (CAS 1222642-00-3)
- 2-(Chloromethyl)-1h-benzo[d]imidazole-6-carboxylic acid (CAS 351226-57-8)
- 7-(Chloromethyl)benzo[d]isothiazole (CAS 2021538-99-6)
- Fonofos (CAS 994-22-9)
- 3,4-Dibromo-2-(1-ethoxyethyl)thiophene (CAS 1394021-97-6)
- 3-Azabicyclo[4.1.0]heptan-1-amine dihydrochloride (CAS 489438-96-2)
- Semaglutide impurity 96 (CAS CATO-C4X-222696)
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