3,5-Diiodo-DL-thyronine CAS 534-51-0
| CAS No. | 534-51-0 |
| Molecular Formula | C15H13I2NO4 |
| Molecular Weight | 525.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,5-Diiodo-DL-thyronine (CAS 534-51-0) is a high-purity analytical reference standard with the molecular formula C15H13I2NO4 and a molecular weight of 525.08 g/mol.
Based on its molecular formula C15H13I2NO4, 3,5-Diiodo-DL-thyronine contains a flavonoid core, 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 525.08 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C15H13I2NO4 |
| Molecular Weight | 525.08 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 1 |
Related Diiodo Standards
- 3,5-Diiodo-D-thyronine (CAS 5563-89-3)
- 2,3-Diiodo-5-methyl-1-(phenylsulfonyl)-1H-pyrrolo[2,3-b]pyridine (CAS 1246088-65-2)
- 2,4-Diiodo-6-(methylsulfonyl)phenyl hexanoate (CAS 400087-36-7)
- 6,8-Diiodo-3-(2-oxo-2-(thiophen-2-yl)ethyl)quinazolin-4(3H)-one (CAS 669762-29-2)
- 5,7-Diiodo-3-(4-methoxybenzoyl)benzo[d]oxazol-2(3H)-one (CAS 861212-99-9)
- (R)-6,6'-Diiodo-4,4'-dimethyl-2,2',3,3'-tetrahydro-1,1'-spirobi[indene]-7,7'-diol (CAS 2098225-21-7)
- (S)-6,6'-diiodo-4,4'-dimethyl-2,2',3,3'-tetrahydro-1,1'-spirobi[indene]-7,7'-diol (CAS 2050190-03-7)
- Boc-3,5-diiodo-L-tyrosine (CAS 62129-53-7)
Recommended Standards
- Levothyroxine Impurity 16 (CAS 4192-14-7)
- 2-(Benzylsulfanyl)-5-(4-chlorophenyl)-4-{2'-fluoro-4'-propyl-[1,1'-biphenyl]-4-yl}pyrimidine (CAS 478248-93-0)
- rac-Levothyroxine EP Impurity J (3,3'-DL-Diiodothyronine) (CAS 70-40-6)
- 2-Chloro-3,4-bis((4-methoxybenzyl)oxy)-N-(2-(pyrrolidin-1-yl)ethyl)benzamide (CAS 1225208-44-5)
- Boronic acid, b-[3-[[(3-chlorophenyl)amino]carbonyl]phenyl]- (CAS 874288-32-1)
- Ethyl 2-amino-4-(5-methyl-2-furyl)thiophene-3-carboxylate, 97% (CAS 378196-87-3)
- Methyl 4-[(4-methylphenyl)(methylsulfonyl)amino]butanoate (CAS 1858242-69-9)
- (2Z)-3-[(4-Fluorophenyl)amino]-2-[4-(3-fluoropropoxy)phenyl]prop-2-enenitrile (CAS 477888-38-3)
- Methyl 4-bromo-1-ethyl-1H-pyrrole-2-carboxylate (CAS 1311628-39-3)
- Cyclohexyl 2,4-dichlorophenyl ketone (CAS 898769-45-4)
- 3-(Isopropylamino)butanoic acid (CAS 16217-38-2)
- Pomalidomide Impurity 62 (CAS CATO-C4X-135462)
- 1-(6-Fluoro-1h-indol-3-yl)ethan-1-one (CAS 949035-26-1)
- 141801-03-8 IL-1 Receptor Peptide (human) (CAS 141801-03-8)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com