NSI-189 Phosphate – CAS 1270138-41-4

NSI-189 phosphate is supplied by Rexar as a chemical reference material for analytical chemistry, compound identification and laboratory-based comparison workflows. This material is intended for controlled research environments requiring verified chemical identity, salt-form specification and consistent analytical reproducibility.

NSI-189 phosphate (CAS 1270138-41-4) is available directly through the Rexar webshop and supplied in sealed laboratory packaging for distribution within the European Union.

Rexar Technical Compound Datasheet (PDF)

Safety Data Sheet (SDS)

Additional public reference

Molecular structure data and selected physicochemical properties can be consulted via the public database: NSI-189 phosphate on PubChem

Structural overview and molecular architecture

NSI-189 phosphate is a substituted phenyl-piperazine derivative featuring a benzylpiperazine core linked to a substituted pyridine moiety via an amide functionality. The phosphate counterion forms a salt with the protonated amine group, influencing solubility, crystalline structure and analytical behavior.

The molecular framework combines aromatic systems, heterocyclic nitrogen atoms and aliphatic side chains, resulting in a structurally diverse small molecule. The presence of multiple nitrogen atoms contributes to defined protonation states under controlled pH conditions.

Salt form specification and analytical relevance

This product is supplied exclusively as the phosphate salt. Chemical identifiers, molecular weight and physicochemical characteristics differ between the free base and salt forms. All data presented on this page refers specifically to the phosphate salt (CAS 1270138-41-4).

The phosphate counterion may influence hygroscopic behavior, aqueous solubility and chromatographic retention characteristics. Accurate salt-form documentation is essential in laboratory comparison workflows to ensure consistent analytical reference standards.

Chemical identity and structural data

NSI-189 phosphate | CAS: 1270138-41-4 | Molecular formula: C₂₂H₂₈ClN₃O₄P | Molecular weight: 463.90 g/mol.

• Chemical name: NSI-189 phosphate
• IUPAC name: (4-benzylpiperazin-1-yl)-[2-(3-methylbutylamino)pyridin-3-yl]methanone; phosphoric acid
• Salt form supplied: Phosphate
• CAS number: 1270138-41-4
• Molecular formula: C₂₂H₂₈ClN₃O₄P
• Molar mass: 463.90 g/mol
• Physical appearance: White to off-white crystalline powder

Reference identifiers

• CAS: 1270138-41-4
• Molecular formula: C₂₂H₂₈ClN₃O₄P
• Molecular weight: 463.90 g/mol

Frequently asked technical questions

What is the CAS number of NSI-189 phosphate?
The CAS number is 1270138-41-4.

Is this the phosphate salt form?
Yes. This product is supplied exclusively as the phosphate salt.

Does this page refer to the free base?
No. All reference information on this page relates specifically to the phosphate salt form.

Is this product intended for human or animal use?
No. This material is supplied exclusively as a laboratory reference compound.

Is NSI-189 phosphate available for shipment within the EU?
Yes. Orders are supplied in sealed laboratory packaging via the Rexar webshop.

Disclaimer:
This product is intended for laboratory research use only. It is not intended for human or animal consumption, nor for medical, diagnostic, or therapeutic applications.