chondroitin sulfate impurity B CAS CATO-C4X-32812
| CAS No. | CATO-C4X-32812 |
| Molecular Formula | C14H20NO11 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of chondroitin sulfate impurity B (C14H20NO11Na) 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies chondroitin sulfate impurity B (CAS CATO-C4X-32812), a pharmacopoeial impurity reference standard (molecular formula C14H20NO11Na, MW 401.30 g/mol) used for the identification and quantification of trace impurities in APIs.
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 | C14H20NO11 Na |
| Molecular Weight | 401.30 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), 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; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related chondroitin Standards
- Chondroitin Sulfate C Sodium Salt (Technical Grade) (CAS 12678-07-8)
- Chondroitin disaccharide δdi-0S sodium salt (CAS 136132-69-9)
- Chondroitin disaccharide Δdi-6S sodium salt (CAS 136132-72-4)
- Chondroitin disaccharide Δdi-4S sodium salt (CAS 136144-56-4)
- Chondroitin disaccharide δdi-UA-2S sodium salt (CAS 149368-04-7)
- Sodium Chondroitin Sulfate A (CAS 39455-18-0)
- Chondroitin Disaccharide di-6SDISCONTINUED (CAS 51449-08-2)
- Chondroitin Sodium Salt (CAS 54328-35-7)
Recommended Standards
- Ribavirin Impurity 51 (CAS 4928-88-5)
- Amikacin Impurity 22 (CAS CATO-C4X-197722)
- Terbutaline impurity 99 (CAS 27628-05-3)
- (3-Methylimidazo[1,5-a]pyridin-1-yl)methanamine (CAS 1018517-63-9)
- N-(2,4-difluorophenyl)-2-(1H-indol-3-yl)-2-oxoacetamide (CAS 946387-17-3)
- 1-(2-(3-Amino-4-methyl-1h-pyrazol-1-yl)ethyl)imidazolidin-2-one (CAS 1339899-12-5)
- 2-chloro-1-[1-(4-fluorophenyl)-1H-1,2,3-triazol-4-yl]ethan-1-one (CAS 1375471-68-3)
- 4-Homopiperazinothieno[2,3-d]pyrimidine (CAS 874781-96-1)
- cis-4-Methoxytetrahydro-2H-pyran-3-amine hydrochloride (CAS 1657033-45-8)
- Semaglutide impurity 62 (CAS CATO-C4X-222662)
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