Melatonin Impurity 29 CAS 1020701-51-2
| CAS No. | 1020701-51-2 |
| Molecular Formula | C20H22N2O4S |
| Molecular Weight | 386.46 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Melatonin Impurity 29 (CAS 1020701-51-2) is a certified pharmaceutical impurity reference standard with the molecular formula C20H22N2O4S and a molecular weight of 386.46 g/mol.
Based on its molecular formula C20H22N2O4S, Melatonin Impurity 29 contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 386.46 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).
As a certified reference material (CRM), Melatonin Impurity 29 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.
Physical & Chemical Properties
| Molecular Formula | C20H22N2O4S |
| Molecular Weight | 386.46 g/mol |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Melatonin Standards
- Melatonin 2-Iodo Impurity (CAS 93515-00-5)
- Melatonin Impurity 33 (CAS 14670-08-7)
- Melatonin Impurity 27 (CAS 188397-02-6)
- Melatonin impurity 10 (CAS CATO-C4X-229210)
- Melatonin Impurity 21 (CAS 176244-65-8)
- Melatonin impurity 16 (CAS 203442-76-6)
- Melatonin impurity 17 (CAS 203442-77-7)
- Melatonin Impurity 22 (CAS CATO-C4X-229222)
Recommended Standards
- Propargyl-PEG4-Tos (CAS 875770-32-4)
- 4-(((1-Methyl-1H-pyrazol-4-yl)methyl)(2-(piperidin-1-ylsulfonyl)ethyl)amino)-4-oxobutanoic acid (CAS 1010865-18-5)
- N-(3-Methoxypropyl)-4-(phenylsulfonyl)-2-(m-tolyl)oxazol-5-amine (CAS 862739-55-7)
- 2-(2-(2-Amino-4-methylpyrimidin-5-yl)-4-morpholinothieno[3,2-d]pyrimidin-6-yl)propan-2-ol (CAS 1033739-92-2)
- Propranolol Impurity 38 (CAS CATO-C4X-151938)
- Risdiplam impurity 6 (CAS CATO-C4X-30126)
- Furan Impuirty 2 (CAS 4741-45-1)
- 1-(Triphenylmethyl)-1H-imidazole-4-methanamine (CAS 340179-89-7)
- 2,3,4,5-Tetrachloro-6-phenoxyaniline (CAS 1956310-69-2)
- 5-Iodo-4-methyl-6-(trifluoromethyl)pyrimidin-2-amine (CAS 1823943-38-9)
- 3-(4-Methoxypyrimidin-2-yl)pyrazolo[1,5-a]pyrazine (CAS 1330043-94-1)
- Methyl 3-amino-2-methyl-3-phenylpropanoate hydrochloride (CAS 1375471-75-2)
- 3-((3-Fluorobenzyl)thio)-6-(pyridin-3-yl)pyridazine (CAS 872701-39-8)
- Acetyl tetrapeptide-9(Dermican LS 9837) (CAS 928006-50-2)
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