1-(1-chloroethyl)-3-methylbenzene CAS 19935-78-5
| CAS No. | 19935-78-5 |
| Molecular Formula | C9H11Cl |
| Molecular Weight | 154.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1-(1-chloroethyl)-3-methylbenzene.
CATO supplies 1-(1-chloroethyl)-3-methylbenzene (CAS 19935-78-5), a certified reference material (molecular formula C9H11Cl, MW 154.64 g/mol) for analytical method development and quality control.
1-(1-chloroethyl)-3-methylbenzene (C9H11Cl) contains chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 | C9H11Cl |
| Molecular Weight | 154.64 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
Related chloroethyl Standards
- 1-(2-Chloroethyl)-3-methylbenzene (CAS 39199-36-5)
- 2-(1-Chloroethyl)-5-methylpyridine (CAS 106737-85-3)
- 2-(2-Chloroethyl)-5-methylpyridine (CAS 106737-86-4)
- 2-(2-Chloroethyl)-3-methylpyridine (CAS 1240412-09-2)
- 2-(2-Chloroethyl)-4-methylpyridine (CAS 216961-75-0)
- 4-(2-Chloroethyl)aniline (CAS 81865-10-3)
- 5-(2-Chloroethyl)-2-methylpyridine (CAS 805179-45-7)
- n-(2-Chloroethyl)aniline (CAS 935-06-8)
Recommended Standards
- (Chloromethyl)ethylbenzene (CAS 26968-58-1)
- (1-Chloropropan-2-yl)benzene (CAS 824-47-5)
- 1-(chloromethyl)-3,5-dimethylbenzene (CAS 2745-54-2)
- 2-Chloro-1,3,5-trimethylbenzene (CAS 1667-04-5)
- Ethyl 4-hydroxy-2-[3-(trifluoromethyl)phenyl]-1,3-thiazole-5-carboxylate (CAS 240800-53-7)
- 1-(3-Bromo-2-methoxyphenyl)ethan-1-ol (CAS 267651-22-9)
- 4-(4-Fluorobenzoyl)-3-phenylisoxazol-5(4H)-one (CAS 148462-23-1)
- 3-(1,2,3,4-Tetrahydroquinolin-4-yl)propanamide (CAS 1315365-99-1)
- 2-(2-Isopropyl-5-methylphenoxy)-2-methylpropanoic acid (CAS 97283-84-6)
- Methyl 2-amino-2-(4-fluorophenyl)acetate (CAS 42718-13-8)
- 2-Chloro-4-(difluoromethoxy)-4'-(trifluoromethoxy)-1,1'-biphenyl (CAS 1261828-96-9)
- 8-Methyl-2-phenylquinolin-4-ol (CAS 92855-38-4)
- 3-Cyclopropoxy-N1,N1-dimethylbenzene-1,2-diamine (CAS 1243363-14-5)
- Insulin Pork(≥27 USP units/mg) (CAS 12584-58-6)
Why CATO?
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