5-Methoxy-1,2,3,3-tetramethyl-3H-indol-1-ium iodide CAS 57019-81-5
| CAS No. | 57019-81-5 |
| Molecular Formula | C13H18NO |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 5-Methoxy-1,2,3,3-tetramethyl-3H-indol-1-ium iodide 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.
5-Methoxy-1,2,3,3-tetramethyl-3H-indol-1-ium iodide (CAS 57019-81-5), molecular formula C13H18NOI and molecular weight 331.19 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C13H18NOI, 5-Methoxy-1,2,3,3-tetramethyl-3H-indol-1-ium iodide contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, iodine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 331.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C13H18NO I |
| Molecular Weight | 331.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
- (2-(Tetrahydro-2H-pyran-4-yl)thiazol-4-yl)methanol (CAS 1476847-72-9)
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- (S)-1-(2,3-difluorophenyl)butan-1-amine (CAS 1213146-15-6)
- 3-(2,3-Dihydrobenzo[b]thiophen-2-yl)propanoic acid (CAS 1518360-38-7)
- N-[4-(4-Benzylpiperazin-1-yl)phenyl]-4-chlorobenzamide (CAS 303151-11-3)
- (R)-(+)-1-(2-Diphenylphosphino-1-naphthyl) Isoquinoline ((R)-QUINAP) (CAS 149341-34-4)
- N-Phenylpyrrolidin-3-amine (CAS 17741-13-8)
- Terbinafine Hydrochloride EP Impurity F HCl (CAS 926281-74-5 (free base))
- 55306-03-1 Sericic acid Olean-12-en-28-oic acid, 2,3,19,23-tetrahydroxy-, (2alpha,3beta,4beta,19alpha)- (2alpha,3beta,4beta,19alpha)-2,3,19,23-Tetrahydroxyolean-12-en-28-oic acid 2,3,19,23-Tetrahydroxyolean-12-en-28-oic acid (CAS 55306-03-1)
- Tirzepatide Impurity 33 (CAS CATO-C4X-324033)
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