4-Chloro-2-[(1E)-(hydroxyimino)methyl]phenol CAS 87974-49-0
| CAS No. | 87974-49-0 |
| Molecular Formula | C7H6ClNO2 |
| Molecular Weight | 171.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-Chloro-2-[(1E)-(hydroxyimino)methyl]phenol 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.
CATO supplies 4-Chloro-2-[(1E)-(hydroxyimino)methyl]phenol (CAS 87974-49-0), a certified reference material (molecular formula C7H6ClNO2, MW 171.58 g/mol) for analytical method development and quality control.
Structurally, 4-Chloro-2-[(1E)-(hydroxyimino)methyl]phenol (C7H6ClNO2) contains an amide group, 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 171.58 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
Physical & Chemical Properties
| Molecular Formula | C7H6ClNO2 |
| Molecular Weight | 171.58 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; 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.) | 1982 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
- 3-chloro-4-hydroxybenzamide (CAS 1007578-86-0)
- 4-Chloro-2-methoxynicotinaldehyde (CAS 1008451-58-8)
- 6-Chloro-N'-hydroxypicolinimidamide (CAS 1042151-12-1)
- 2-Chloro-4-hydroxybenzamide (CAS 1046818-83-0)
- 2-Chloro-6-hydroxybenzamide (CAS 1056958-24-7)
- 4-Chloro-5-methoxypyridine-2-carbaldehyde (CAS 1060801-63-9)
- 2-Chloro-5-methoxyisonicotinaldehyde (CAS 1060801-65-1)
- 6-Chloro-5-methoxynicotinaldehyde (CAS 1060801-67-3)
Recommended Standards
- 4-Amino-5-chloro-1,3-benzodioxole (CAS 379228-45-2)
- 4-Chloro-2-hydroxybenzamide (CAS 37893-37-1)
- 4-Amino-3-chlorobenzoic Acid (CAS 2486-71-7)
- 4-Chloro-2-methylpyridinecarboxylic Acid (CAS 914219-06-0)
- 5-Bromo-2-(2-bromophenyl)-2H-1,2,3-triazole-4-carboxylic acid (CAS 1710661-05-4)
- 5-Chloro-2-((tetrahydrofuran-3-yl)methoxy)benzenesulfonamide (CAS 1340414-05-2)
- 4-(2,3,4,5-Tetrahydro-1h-1,5-benzodiazepin-2-yl)aniline (CAS 904813-84-9)
- Methyl 4-amino-2-chloro-5-cyanobenzoate (CAS 2383694-19-5)
- Ethyl 2-((6-chloro-2-phenyl-1H-benzo[d]imidazol-1-yl)oxy)acetate (CAS 338978-61-3)
- 5-(3-Formyl-4-methoxyphenyl)nicotinic acid (CAS 921987-77-1)
- 4-Chlorobenzo[c][1,2]oxaborol-1(3H)-ol (CAS 947162-29-0)
- 2-(4-Bromophenyl)-7,8-dihydro-3H-pyrano[4,3-d]pyrimidin-4(5H)-one (CAS 1450790-53-0)
- benzyl N-[cis-3-hydroxycyclopentyl]carbamate (CAS 124555-31-3)
- D-Ser12-Semaglutide (CAS CATO-C4X-2226240)
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