Alanyl Glutamine Impurity 16 CAS 672284-92-3
| CAS No. | 672284-92-3 |
| Molecular Formula | C9H17N3O4 |
| Molecular Weight | 231.25 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Alanyl Glutamine Impurity 16 is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Alanyl Glutamine Impurity 16 (CAS 672284-92-3), a pharmacopoeial impurity reference standard (molecular formula C9H17N3O4, MW 231.25 g/mol) used for the identification and quantification of trace impurities in APIs.
Alanyl Glutamine Impurity 16 (C9H17N3O4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
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 | C9H17N3O4 |
| Molecular Weight | 231.25 g/mol |
| Appearance | White to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 3 |
Related Alanyl Standards
- L-Alanyl-L-alanyl-L-alanine (CAS 5874-90-8)
- DL-Alanyl-DL-phenylalanine (CAS 1999-45-7)
- beta-Alanyl-L-histidine (CAS 305-84-0)
- Alanyl Glutamine Impurity 1 (CAS 159141-33-0)
- Alanyl Glutamine Impurity 2 (CAS CATO-C4X-19742)
- Alanyl Glutamine Impurity 5 (CAS CATO-C4X-19745)
- Alanyl Glutamine Impurity 6 (CAS CATO-C4X-19746)
- Alanyl Glutamine Impurity 23 (CAS CATO-C4X-197423)
Recommended Standards
- Phenobarbital Impurity6 (CAS 130690-55-0)
- Letrozole Impurity 27 (CAS 160388-64-7)
- Morinidazole Impurity 16 (CAS CATO-C4X-219616)
- Iguratimod Impurity 126 (CAS CATO-C4X-1826126)
- Apremilast Impurity 25 (CAS 608142-27-4)
- Alfacalcidol impurity 10 (CAS 174176-73-9)
- Polymyxin Impurity 20 (CAS 343979-23-7)
- 4-(4-Chlorophenyl)-1-(2,4-dichloro-5-methoxyphenyl)-3-methyl-1H-pyrazol-5-amine (CAS 400085-59-8)
- Allyl Mesylate (CAS 6728-21-8)
- Immethridine Dihydrobromide (CAS 699020-93-4)
- 5-Amino-1-(3,5-dimethylphenyl)-1h-1,2,3-triazole-4-carboxamide (CAS 443113-22-2)
- 5,6-Dihydrobenzo[c]acridine-7-carboxylic acid (CAS 83-93-2)
- 6-(Dimethylamino)-2-naphthonitrile (CAS 5043-04-9)
- Lixisenatide (CAS 320367-13-3)
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