Ramelteon Impurity N11 CAS 1227056-68-9
| CAS No. | 1227056-68-9 |
| Molecular Formula | C13H17NO |
| Molecular Weight | N/A |
| 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.
Ramelteon Impurity N11 (CAS 1227056-68-9) is a certified pharmaceutical impurity reference standard with the molecular formula C13H17NO•C13H18O2 and a molecular weight of 409.57 g/mol.
Based on its molecular formula C13H17NO•C13H18O2, Ramelteon Impurity N11 contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 409.57 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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 | C13H17NO • C13H18O2 |
| Molecular Weight | 409.57 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 1 |
Related Ramelteon Standards
- Ramelteon Impurity 42 (CAS 1053239-38-5)
- Ramelteon Impurity 10 HCl (CAS 1053239-39-6)
- Ramelteon Imputiry 17 (CAS 1092484-10-0)
- Ramelteon Impurity 20 (CAS 1092507-02-2)
- Ramelteon Impurity 21 (CAS 1092507-03-3)
- Ramelteon Imputiry 18 (CAS 1092507-07-7)
- Ramelteon Impurity 25 HCI (CAS 1174496-11-7)
- rac Ramelteon-d3 (CAS 1185146-24-0)
Recommended Standards
- Benserazide impurity 51 (CAS CATO-C4X-142751)
- Berberine Impurity 31 (CAS 17388-19-1)
- Naphazoline impurity 12 (CAS CATO-C4X-144012)
- 2-(But-2-ynyloxy)nicotinoyl chloride (CAS 1936017-45-6)
- 1,2,4-Trimethyl-1,2,3,4-tetrahydrobenzofuro[3,2-c]pyridin-8-amine succinate (CAS 1228070-78-7)
- 2-(2-Pyrrolidin-1-yl-ethoxy)-pyridine-5-boronic acid pinacol ester hydrochloride (CAS 2379560-95-7)
- 7-Bromoimidazo[1,5-a]pyridine (CAS 865156-48-5)
- Ethyl 3-propyl-1,2,4-oxadiazole-5-carboxylate (CAS 1342849-83-5)
- .beta.-D-Glucopyranose, cyclic 4.fwdarw.2':6.fwdarw.2-[(1S)-4-(6-carboxy-2,3,4-trihydroxyphenoxy)-4',5,5',6,6'-pentahydroxy[1,1'-biphenyl]-2,2'-dicarboxylate] 1,2,3-tris(3,4,5-trihydroxybenzoate), 2-ester with .beta.-D-glucopyranose 1,3,6-tris(3,4,5-trihydroxybenzoate) 127243-65-6 Woodfordin A [(2S,3R,4S,5R,6R)-5-hydroxy-2,4-bis[(3,4,5-trihydroxybenzoyl)oxy]-6-[(3,4,5-trihydroxybenzoyl)oxymethyl]tetrahydropyran-3-yl] 3,4,5-trihydroxy-2-[pentahydroxy-dioxo-tris[(3,4,5-trihydroxybenzoyl)oxy][?]yl]oxy-benzoate (CAS 127243-65-6)
- Des-[Gly]31-Semaglutide(x TFA Salt) (CAS 873874-39-6(free base))
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