Vasopressin Impurity 4 CAS CATO-C4X-23654
| CAS No. | CATO-C4X-23654 |
| Molecular Formula | C46H64N14O13S3 |
| Molecular Weight | 1117.28 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C46H64N14O13S3, Vasopressin Impurity 4 contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 1117.28 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).
CATO supplies Vasopressin Impurity 4 (CAS CATO-C4X-23654), a pharmacopoeial impurity reference standard (molecular formula C46H64N14O13S3, MW 1117.28 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 | C46H64N14O13S3 |
| Molecular Weight | 1117.28 g/mol |
| Purity | ≥95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 22.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 14 |
| Sulfur Atoms | 3 |
Related Vasopressin Standards
- Vasopressin Impurity 6 (CAS CATO-C4X-23656)
- Vasopressin Impurity 3 (CAS CATO-C4X-23653)
- [Asp5]vasopressin (CAS 78031-79-5)
- Vasopressin Impurity 5 (CAS CATO-C4X-23655)
- (Arg8)-Vasopressin (4-9) (CAS 96027-30-4)
- [Arg 8]-Vasopressin Acetate (CAS 129979-57-3)
- Vasopressin, 8-L-arginine-, monoacetate (CAS 83968-48-3)
- Vasopressin acetate (CAS 11000-17-2 (Free base))
Recommended Standards
- 1(2),3(2),5(2),7(2),9(2),11(2)-Hexahydroxy-1,3,5,7,9,11(1,3)-hexabenzenacyclododecaphane-1(5),3(5),5(5),7(5),9(5),11(5)-hexasulfonic acid (CAS 102088-39-1)
- Tafluposide (CAS 179067-42-6)
- m-PEG24-acid (CAS 2248203-61-2)
- Everolimus Impurity 24 (CAS CATO-C4X-112224)
- Levocetirizine Impurity 58 (CAS CATO-C4X-108358)
- Quetiapine Fumarate EP Impurity V (CAS 2204369-14-0)
- Olopatadine Impurity 12 (CAS 66801-40-9)
- Methyl 2-(3,3-difluoropiperidin-4-yl)acetate (CAS 1334472-21-7)
- Aprepitant Impurity 32 (CAS 225920-05-8)
- 1,2,3,4-Tetrahydro-benz[a]anthracen-4-ol (CAS 60968-07-2)
- 4-(Cyclohexylmethyl)-3-hydroxybenzaldehyde (CAS 1243443-45-9)
- rel-Isopropyl (1S,3R,5R,6S)-5-hydroxybicyclo[4.1.0]heptane-3-carboxylate (CAS 2570276-56-9)
- 4-(4-Bromophenyl)-5-(ethylsulfonyl)pyrimidin-2-amine (CAS 1713714-45-4)
- Glucagon (19-29) (human, rat, porcine) (CAS 64790-15-4)
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