Brexpiprazole Impurity 31 CAS 95-15-8
| CAS No. | 95-15-8 |
| Molecular Formula | C8H6S |
| Molecular Weight | 134.20 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Brexpiprazole Impurity 31 is closely related to sulfur-containing functionality, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Brexpiprazole Impurity 31 (CAS 95-15-8) is a certified pharmaceutical impurity reference standard with the molecular formula C8H6S and a molecular weight of 134.20 g/mol.
Owing to sulfur-containing functionality, an aromatic ring system, Brexpiprazole Impurity 31 is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 134.20 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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.
As a certified reference material (CRM), Brexpiprazole Impurity 31 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 | C8H6S |
| Molecular Weight | 134.20 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Sulfur Atoms | 1 |
Related Brexpiprazole Standards
- Brexpiprazole Impurity 58 (CAS 536-90-3)
- Brexpiprazole Impurity 69（stabilized with BHT） (CAS 13179-96-9)
- Brexpiprazole Impurity 15 (CAS 31570-97-5)
- Brexpiprazole Impurity 4 (CAS 70500-72-0)
- Brexpiprazole Impurity 89 (CAS 15450-69-8)
- Brexpiprazole impurity 108 (CAS 17082-09-6)
- Brexpiprazole Impurity 53 (CAS 102-92-1)
- Brexpiprazole Impurity 18 (CAS 66490-33-3)
Recommended Standards
- 2-Hydroxy-4-mercaptopyrimidine 3,4-Dihydro-4-thioxo-2(1H)-pyrimidinone 4-Thiouracil 591-28-6 T2757 (CAS 591-28-6)
- Methyl 3-(methylthio)propionate (CAS 13532-18-8)
- 5-Methylsulfanyl-1H-[1,2,4]triazol-3-ylamine 3-amino-5-methylthio-1,2,4-triazole 5-(methylthio)-1h-1,2,4-triazol-3-amine 3-amino-5-methylthio-1h-1,2,4-triazole 3-amino-5-(methylmercapto)-1h-1,2,4-triazole 5-methylsulfanyl-1 h-[1,2,4]triazol-3-ylamine 3-amino-5-(methylthio)-1h-1,2,4-triazole 45534-08-5 (CAS 45534-08-5)
- Propan-2-yl 2-Sulfanylacetate (CAS 7383-61-1)
- Isavuconazole Impurity 64 DiTrifluoroacetate（Easy to absorb moisture） (CAS 2832083-17-5（free base)）)
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- 103244-41-3 Insulin-like Growth Factor-II fragment 33-40 Ser-Arg-Val-Ser-Arg-Arg-Ser-Arg (CAS 103244-41-3)
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