Erythromycin Impurity 40 CAS CATO-C4X-100140
| CAS No. | CATO-C4X-100140 |
| Molecular Formula | C37H65NO11 |
| Molecular Weight | 699.91 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Erythromycin Impurity 40.
CATO supplies Erythromycin Impurity 40 (CAS CATO-C4X-100140), a pharmacopoeial impurity reference standard (molecular formula C37H65NO11, MW 699.91 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Erythromycin Impurity 40 (C37H65NO11) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
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 | C37H65NO11 |
| Molecular Weight | 699.91 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Erythromycin Standards
- Erythromycin Impurity 41 (CAS 33275-72-8)
- Erythromycin impurity 56 (CAS CATO-C4X-100156)
- Erythromycin EP Impurity K (CAS 33442-56-7)
- Erythromycin Impurity 49 (CAS 229318-98-3)
- Erythromycin B rearranged derivatives (CAS CATO-C4X-100170)
- Erythromycin EP Impurity E (CAS 33396-29-1)
- Erythromycin EP Impurity D (CAS 23893-13-2)
- Erythromycin EP Impurity F (CAS 105882-69-7)
Recommended Standards
- 3,6-Di([1,1':3',1''-terphenyl]-5'-yl)-9-phenyl-9H-carbazole (CAS 1201649-79-7)
- (Z)-2-[2-(Tritylamino)thiazol-4-yl]-2-(trityloxyimino)acetic Acid Ethyl Ester (CAS 69689-86-7)
- 6,6',6''-(1,3,5-Triazine-2,4,6-triyl)tris(3-(hexyloxy)-2-methylphenol) (CAS 222529-65-9)
- (11bS)-8,9,10,11,12,13,14,15-Octahydro-2,6-diphenyl-N,N-bis[(1R)-1-phenylethyl]dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-amine (CAS 1642865-72-2)
- Gliclazide Impurity 14 (CAS 98431-87-9)
- Bisoprolol Impurity 89 (CAS 2417155-12-3)
- Etravirine Impurity 6 (CAS 1704730-70-0)
- 1-methoxypropane-2-sulfonyl chloride (CAS 1249353-51-2)
- n-(2,5-Dichlorophenyl)-2-mercapto-4-oxo-3-phenyl-3,4-dihydroquinazoline-7-carboxamide (CAS 885458-61-7)
- Methyl 3-(adamantane-1-carboxamido)thiophene-2-carboxylate (CAS 354544-31-3)
- Ensitrelvir Impurity 7 (CAS CATO-C4X-25197)
- Phenol, 2-[4,6-bis([1,1'-biphenyl]-4-yl)-1,3,5-triazin-2-yl]-5-[(2-ethylhexyl)oxy]- (CAS 204583-39-1)
- (E)-2-ethoxy-1-methoxy-3-(2-nitrovinyl)benzene (CAS 87790-86-1)
- Heme iron polypeptide(Hematin) (CAS 14875-96-8)
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