2,5-Dichloro-4-hydroxybenzaldehyde CAS 27164-10-9
| CAS No. | 27164-10-9 |
| Molecular Formula | C7H4Cl2O2 |
| Molecular Weight | 191.01 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2,5-Dichloro-4-hydroxybenzaldehyde is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
2,5-Dichloro-4-hydroxybenzaldehyde (CAS 27164-10-9), molecular formula C7H4Cl2O2 and molecular weight 191.01 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2,5-Dichloro-4-hydroxybenzaldehyde (C7H4Cl2O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, 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 191.01 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.
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 2,5-Dichloro-4-hydroxybenzaldehyde 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 | C7H4Cl2O2 |
| Molecular Weight | 191.01 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; 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.) | 1964 |
| Halogen Content | Cl-containing |
Related Dichloro Standards
- 1,4-Dichloro-5,7-dihydrofuro[3,4-d]pyridazine (CAS 10554-15-1)
- 4,6-Dichloro-2-methylpyrimidine-5-carbaldehyde (CAS 14160-91-9)
- 2-(4,6-Dichloro-5-pyrimidyl)acetaldehyde (CAS 16019-33-3)
- 2,3-Dichloro-4-hydroxybenzaldehyde (CAS 16861-22-6)
- 2,4-Dichloro-5,6-dihydrofuro[2,3-d]pyrimidine (CAS 1823731-18-5)
- 2,4-Dichloro-3-hydroxybenzaldehyde (CAS 56962-13-1)
- 2,4-Dichloro-5,7-dihydrofuro[3,4-d]pyrimidine (CAS 848398-41-4)
- 2,4-Dichloro-5-hydroxybenzaldehyde (CAS 56962-15-3)
Recommended Standards
- 2,4-Dichloronicotinamide (CAS 70593-56-5)
- 2,5-Dichloronicotinamide (CAS 75291-86-0)
- 2,4-Dichloro-6-methyl-5-pyrimidinecarboxaldehyde (CAS 933686-24-9)
- 2,6-Dichloro-3-hydroxybenzaldehyde (CAS 56962-14-2)
- tert-Butyl 3-(2-aminoacetamido)pyrrolidine-1-carboxylate (CAS 1353960-31-2)
- 4-Dimethylsulfamoyl-[1,4]oxazepane-6-carboxylic acid (CAS 1316223-28-5)
- (Rp)-(1R,2S,5R)-2-Isopropyl-5-methylcyclohexyl (4-nitrophenyl) phenylphosphonate (CAS 1463876-09-6)
- 3-(4-Bromo-7-fluoro-1-oxoisoindolin-2-yl)piperidine-2,6-dione (CAS 2438239-34-8)
- (S)-2-Amino-5-(1,3-dioxolan-2-yl)pentanoic acid 215054-80-1 L-Allysine ethylene acetal (CAS 215054-80-1)
- 4,5-Dichloro-2-methyl-1H-indole (CAS 479422-01-0)
- (S)-1-(2,3,6-Trifluorophenyl)ethan-1-ol (CAS 1932124-74-7)
- 2-((Furan-2-ylmethylene)amino)benzoic acid (CAS 63098-85-1)
- 5-(((6-Bromonaphthalen-2-yl)oxy)methyl)-4-phenyl-2,4-dihydro-3H-1,2,4-triazole-3-thione (CAS 791717-24-3)
- D-Ser32-Tirzepatide (CAS CATO-CPTD788692)
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