Rapamycin Impurity 7 CAS CATO-C4X-17467
| CAS No. | CATO-C4X-17467 |
| Molecular Formula | C4H5NO4 |
| Molecular Weight | 131.09 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.
CATO supplies Rapamycin Impurity 7 (CAS CATO-C4X-17467), a pharmacopoeial impurity reference standard (molecular formula C4H5NO4, MW 131.09 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C4H5NO4, Rapamycin Impurity 7 contains a carbohydrate-derived structure, an amide group; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 131.09 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).
As a certified reference material (CRM), Rapamycin Impurity 7 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 | C4H5NO4 |
| Molecular Weight | 131.09 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| 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 |
| Nitrogen Atoms | 1 |
Related Rapamycin Standards
- Rapamycin Impurity 20 (Mixture of Isomers) (CAS CATO-C4X-174620)
- Rapamycin Impurity 14 (CAS CATO-C4X-174614)
- Rapamycin Aldehyde Degrades Impurity (CAS CATO-C4X-174628)
- Rapamycin Impurity 6 (CAS 156223-31-3)
- 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)
Recommended Standards
- L-Serine N-Carboxyanhydride (CAS 33043-54-8)
- 4-Fluorobenzylamine-13C6 (CAS 1189661-31-1)
- 4-Amino-2,4-dioxobutanoic acid (CAS 33239-40-6)
- Difluoromethanesulfonamide (CAS 50585-74-5)
- Gemcitabine Impurity 30 (CAS 143234-91-7)
- Nintedanib Impurity 127 (CAS CATO-C4X-1814127)
- Hydroxychloroquine Impurity 45 (CAS CATO-C4X-183545)
- 4-Bromo-3-chloro-2-methylphenylisothiocyanate (CAS 886501-25-3)
- Pimobendan Impurity 3 (CAS 74150-02-0)
- N-((R)-1-((S)-2-Amino-3-methylbutanoyl)pyrrolidin-3-yl)-N-isopropylacetamide (CAS 1401667-10-4)
- N-(3-(Benzo[d]thiazol-2-yl)phenyl)-2-(quinolin-2-ylthio)acetamide (CAS 670273-98-0)
- Ethyl 2-[3-(nitromethyl)oxetan-3-yl]acetate (CAS 1045709-38-3)
- 2-Chloro-4-(piperidine-1-carboxamido)benzenesulfonyl chloride (CAS 680617-78-1)
- Insulin Degludec impurity 4 (CAS CATO-C4X-21574)
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