Thiotepa Impurity 4 CAS CATO-C4X-21564
| CAS No. | CATO-C4X-21564 |
| Molecular Formula | C5H10BrN2PS |
| Molecular Weight | 241.09 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 241.09 g/mol gives Thiotepa Impurity 4 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Thiotepa Impurity 4 (CAS CATO-C4X-21564) is a certified pharmaceutical impurity reference standard with the molecular formula C5H10BrN2PS and a molecular weight of 241.09 g/mol.
Structurally, Thiotepa Impurity 4 (C5H10BrN2PS) contains sulfur-containing functionality, organophosphorus functionality, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 1.5, corresponding to approximately 1 ring(s) or double-bond equivalent(s). With a molecular weight of 241.09 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C5H10BrN2PS |
| Molecular Weight | 241.09 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 1.5 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Thiotepa Standards
- Thiotepa Impurity 1 (CAS 90877-51-3)
- Thiotepa Impurity 12 (CAS 2835499-20-0)
- Thiotepa Impurity 6 (CAS CATO-C4X-21566)
- Thiotepa Impurity 2 (CAS 121258-29-5)
- Thiotepa Impurity 13 (CAS 1879073-27-4)
- Thiotepa Impurity 5 (CAS CATO-C4X-21565)
- Thiotepa Impurity 14 (CAS CATO-C4X-215614)
- Thiotepa Impurity 11 (CAS CATO-C4X-215611)
Recommended Standards
- 6-bromo-N-ethyl-[1,2,4]triazolo[4,3-a]pyridin-3-amine (CAS 951884-90-5)
- Upadacitinib Impurity 218 (CAS 117718-83-9)
- 5-Chloro-2-methoxybenzenesulfonyl chloride (CAS 22952-32-5)
- 3-Bromobenzo[b]thiophene-2-carbaldehyde (CAS 10135-00-9)
- Vitamin B1 Impurity 14 (CAS CATO-C4X-187314)
- Prednisone Impurity N56 (CAS 103466-44-0)
- Ketoconazole EP Impurity B (and enantiomer) (CAS CATO-C4X-14722)
- 3-(Aminomethyl)-1-(4-fluorophenyl)piperidin-2-one (CAS 1505307-48-1)
- 3-(1h-Indol-3-yl)-N-(prop-2-yn-1-yl)propanamide (CAS 1090617-62-1)
- 1-(Pyrrolidin-3-yl)-1H-1,2,3-triazole hydrochloride (CAS 156113-53-0)
- 5-(Aminomethyl)-N-phenyl-1,3,4-thiadiazole-2-carboxamide (CAS 1217862-67-3)
- 1-(4-Fluoro-2-methylphenyl)butan-1-one (CAS 343-66-8)
- Cyclo(L-Pro-L-Trp-) (CAS 38136-70-8)
- (Tyr?)-C-Type Natriuretic Peptide (32-53) (human, porcine, rat) (CAS 142878-79-3)
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