4-nitrophenyl 2-chloroacetate CAS 79328-69-1
| CAS No. | 79328-69-1 |
| Molecular Formula | C21H34O3 |
| Molecular Weight | 334.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-nitrophenyl 2-chloroacetate is closely related to a steroid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4-nitrophenyl 2-chloroacetate (CAS 79328-69-1) is a high-purity analytical reference standard with the molecular formula C21H34O3 and a molecular weight of 334.49 g/mol.
Owing to a steroid core, a hydroxyl group, an ether linkage, 4-nitrophenyl 2-chloroacetate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 334.49 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C21H34O3 |
| Molecular Weight | 334.49 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
Related nitrophenyl Standards
- 2-Nitrophenyl diphenylcarbamate (CAS 354552-03-7)
- N-(2-Nitrophenyl)-1,3-propanesultam (CAS 1373232-34-8)
- Bis-(4-nitrophenyl)phenylamine (CAS 1100-10-3)
- (2e)-3-[3-(3-nitrophenyl)-1-phenyl-1h-pyrazol-4-yl]prop-2-enoic acid (CAS 381214-35-3)
- 2-Methyl-3-(2-(3-nitrophenyl)-2-oxoethyl)naphthalene-1,4-dione (CAS 303997-22-0)
- 2-Methyl-3-[2-(4-nitrophenyl)-2-oxoethyl]naphthoquinone (CAS 88007-99-2)
- 2-(4-(4-Nitrophenyl)piperazin-1-yl)quinoxaline (CAS 241146-77-0)
- 1-(3-Nitrophenyl)-3-tosylpropan-1-one (CAS 477334-54-6)
Recommended Standards
- 3α,21-Dihydroxy-5α-pregnan-20-one (CAS 567-02-2)
- 5a-Pregnan-3b,17a-diol-20-one (CAS 570-54-7)
- 3α,11 β-Dihydroxy-5α-pregnan-20-one (CAS 23930-29-2)
- 5-PREGNEN-3β, 16α, 20α-TRIOL (CAS 3885-13-0)
- 6-(3,4-Diethoxyphenyl)-3,5-dimethylimidazo[2,1-b]thiazole-2-carboxylic acid (CAS 1437435-97-6)
- 2-Amino-1-(pyridin-2-yl)propan-1-ol (CAS 806596-84-9)
- (3-Phenylpropyl)(prop-2-en-1-yl)amine (CAS 528812-92-2)
- Darunavir Impurity 21 (CAS 866594-60-7)
- Tert-butyl 6-oxa-2-azaspiro[4.5]Decane-2-carboxylate (CAS 2206114-57-8)
- tert-Butyl ((1S,3R)-3-ethynylcyclopentyl)carbamate (CAS 1474041-18-3)
- Tert-butyl (R)-2-((benzyloxy)methyl)piperazine-1-carboxylate (CAS 740806-54-6)
- 4-(4-Chlorophenyl)-4,7-dihydrofuro[3,4-b]pyridine-2,5(1H,3H)-dione (CAS 338966-54-4)
- 2-[2-[4-(Trifluoromethyl)phenyl]thiazol-4-yl]acetic Acid (CAS 17969-63-0)
- Peptide 438 (CAS CATO-CPTD788438)
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