2-chloro-3-hydroxy-5,5-dimethylcyclohex-2-en-1-one CAS 70990-68-0
| CAS No. | 70990-68-0 |
| Molecular Formula | C8H11ClO2 |
| Molecular Weight | 174.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, 2-chloro-3-hydroxy-5,5-dimethylcyclohex-2-en-1-one is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 174.62 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
2-chloro-3-hydroxy-5,5-dimethylcyclohex-2-en-1-one (CAS 70990-68-0), molecular formula C8H11ClO2 and molecular weight 174.62 g/mol, is a CATO reference standard with documented purity and traceability.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C8H11ClO2 |
| Molecular Weight | 174.62 g/mol |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | Cl-containing |
Related chloro Standards
- 2-Chloro-1-cyclobutyl-butane-1,3-dione (CAS 1020732-21-1)
- (5-Chloro-2-methoxyphenyl)methanol (CAS 7035-10-1)
- 2-chloro-1-(1-methyl-2-oxabicyclo[2.1.1]hexan-4-yl)ethanone (CAS 2452342-59-3)
- 2-chloro-1-(3-oxabicyclo[4.1.0]heptan-7-yl)ethanone (CAS 2452340-85-9)
- 2-chloro-1-(4-methyl-2-oxabicyclo[2.1.1]hexan-1-yl)ethanone (CAS 2573212-75-4)
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- 2-chloro-3-ethoxycyclohex-2-en-1-one (CAS 87823-75-4)
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Recommended Standards
- 2-Chloro-5-methylcyclohex-1-ene-1-carboxylic acid (CAS 90003-14-8)
- 2-Cyclohexyl-2-oxoacetyl chloride (CAS 922497-46-9)
- 4-Chloro-3-cyclohexene-1-carboxylic Acid Methyl Ester (CAS 27705-05-1)
- 4-fluorobutane-1-sulfonyl chloride (CAS 372-00-9)
- (3-Cyclobutoxy-5-fluorophenyl)boronic acid (CAS 2246747-54-4)
- 8-Methyl-3-azabicyclo[3.2.1]Octan-8-ol hydrochloride (CAS 1785331-73-8)
- 4-Bromo-5-(difluoromethyl)-6-fluoropicolinaldehyde (CAS 1804495-89-3)
- (2-((2R,6S)-2,6-dimethylmorpholino)pyrimidin-5-yl)boronic acid (CAS 1812220-39-5)
- (3-Chloro-2-fluorobenzyl)(4-chlorophenyl)sulfane (CAS 1443337-21-0)
- 2-Aminoethyl benzenesulfonate (CAS 771582-62-8)
- 3-Chloro-2-ethoxypyridine-4-boronic acid (CAS 2096333-52-5)
- H-Cys(Bzl)-pNA (CAS 7436-62-6)
- Atorvastatin Impurity 140 (CAS CATO-C4X-1132140)
- (Tyr?)-C-Peptide (human) (CAS 57327-90-9)
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