Rapamycin Impurity 31 CAS CATO-C4X-174631
| CAS No. | CATO-C4X-174631 |
| Molecular Formula | C51H79NO13 |
| Molecular Weight | 914.17 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
As a process- or degradation-related impurity, Rapamycin Impurity 31 (CAS CATO-C4X-174631, C51H79NO13) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Rapamycin Impurity 31 (C51H79NO13) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C51H79NO13 |
| Molecular Weight | 914.17 g/mol |
| Purity | ≥95% |
| 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 |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Rapamycin Standards
- Rapamycin Impurity 12 (CAS 150821-39-9)
- Rapamycin Impurity 19 (CAS 144293-63-0)
- Rapamycin Impurity 21 (CAS 151945-42-5)
- Rapamycin Impurity 24 (CAS CATO-C4X-174624)
- Rapamycin Impurity 25 (CAS 151945-42-5 (racemic))
- Rapamycin Dehydration Impurity (CAS CATO-C4X-174627)
- Rapamycin Impurity 29 (CAS CATO-C4X-174629)
- Rapamycin Aldehyde Degrades Impurity (CAS CATO-C4X-174628)
Recommended Standards
- Seco Rapamycin (CAS 147438-27-5)
- 76078-28-9 1,2-Bis(10,12-tricosadiynoyl)phosphatidylcholine 3,5,9-Trioxa-4-phosphadotriaconta-19,21-diyn-1-aminium, 4-hydroxy-N,N,N-trimethyl-10-oxo-7-((1-oxo-10,12-tricosadinyl)oxy)-, hydroxide, inner salt, 4-oxide, (R)- 1,2-Bis(tricosa-10,12-diynoyl)-sn-glycero-3-phosphocholine 1,2-Btpc DC(8,9)PC 1,2-Ditricosa-10,12-diynoyl-sn-glycero-3-phosphocholine (CAS 76078-28-9)
- Theasinensin A (CAS 89064-31-3)
- N-((11bS)-2,6-Di([1,1'-biphenyl]-4-yl)-4-(((trifluoromethyl)sulfonyl)imino)-4l5-dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin-4-yl)-1,1,1-trifluoromethanesulfonamide (CAS 2757103-46-9)
- Ostamivir Impurity 206 (CAS CATO-C4X-1720206)
- Aripiprazole Impurity 39 (CAS CATO-C4X-100839)
- Metformin Impurity 22 (CAS CATO-C4X-122022)
- N-Fmoc-iminodiacetic acid (CAS 112918-82-8)
- 4-(4,5-Dimethyl-4h-1,2,4-triazol-3-yl)thiazol-2-amine (CAS 1342124-77-9)
- 4-Amino-1-ethyl-N-(2-hydroxyethyl)-1H-pyrazole-5-carboxamide (CAS 1486219-97-9)
- (S)-3-Methyl-2,3-dihydro-1H-inden-1-one (CAS 935-77-3)
- (3-Methyl-thiophen-2-ylmethyl)-pyridin-3-ylmethyl-amine hydrochloride (CAS 1052409-97-8)
- N-Acetyl Deshydroxymethyl Fingolimod (CAS 177259-52-8)
- D-[Phe]6-Semaglutide (CAS CATO-CPTD788633)
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