1,1-Dimethyl-1H-indene CAS 18636-55-0
| CAS No. | 18636-55-0 |
| Molecular Formula | C11H12 |
| Molecular Weight | 144.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
1,1-Dimethyl-1H-indene (CAS 18636-55-0), molecular formula C11H12 and molecular weight 144.21 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an aromatic ring system, 1,1-Dimethyl-1H-indene is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 144.21 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C11H12 |
| Molecular Weight | 144.21 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
Related Dimethyl Standards
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Recommended Standards
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- 2-[(1-Ethylpropoxy)methyl]oxirane (CAS 1883765-84-1)
- 5-Amino-3-(3-methyl-2-thienyl)-1H-1,2,4-triazole (CAS 1016690-26-8)
- 4-Methylsulfonyl-2,2',3,4',5',6-hexachlorobiphenyl (CAS 116806-76-9)
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- 2-Amino-N-(isoquinolin-1-ylmethyl)acetamide (CAS 1353947-83-7)
- Ethyl 2-(3-methyl-4-nitrophenyl)thiazole-4-carboxylate (CAS 885278-57-9)
- N-(3-Chloro-4-methylphenyl)-2-((5-(4-chlorophenyl)-4-(p-tolyl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 477330-99-7)
- n-(3-Hydroxyphenyl)benzenesulfonamide (CAS 59149-19-8)
- (R)-2-(4-Fluorophenyl)-2-hydroxyacetonitrile (CAS 149952-37-4)
- 5-Amino-1-(5-hydroxypentyl)pyridin-2(1h)-one (CAS 1249854-66-7)
- Peptide Impurity 34 (CAS 21282-09-7)
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