Intermediates

1,2,3,9-Tetrahydro-4(H)-Carbazol-4-One

  • CAS No.15128-52-6
  • GradeIndustrial / Pharmaceutical
  • Availability● In Stock

High-purity 1,2,3,9-Tetrahydro-4(H)-Carbazol-4-One (CAS 15128-52-6), a key pharmaceutical intermediate for Carvedilol and Ondansetron synthesis.

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Product Technical Details

Product Overview

1,2,3,9-Tetrahydro-4(H)-Carbazol-4-One (CAS 15128-52-6) is a high-value heterocyclic organic compound widely employed as a critical building block in the synthesis of advanced cardiovascular and antiemetic pharmaceuticals. With a molecular formula of C12H11NO and a molecular weight of 185.22 g/mol, this compound features a fused carbazole core with a ketone functionality, offering versatile reactivity for downstream medicinal chemistry applications.

Specifications

Molecular FormulaC12H11NO
Molecular Weight185.22 g/mol
Density1.275 g/cm³
Boiling Point386.3°C at 760 mmHg
Melting Point224–226°C
Flash Point194.5°C
Refractive Index1.689
AppearanceWhite crystal powder
Assay (Purity)≥99%
Loss on Drying≤0.5%
Single Impurity≤0.5%

Industrial Applications

This compound serves as a pivotal intermediate in the commercial-scale production of several therapeutically important active pharmaceutical ingredients (APIs). Key applications include:

  • Synthesis of Carvedilol (CAS 72956-09-3), a non-selective beta blocker used in hypertension and heart failure management.
  • Manufacture of Carvedilol phosphate (CAS 610309-89-2), a water-soluble prodrug derivative.
  • Key precursor in the multi-step synthesis of Ondansetron (CAS 99614-02-5) and its hydrochloride salt (CAS 103639-04-9), widely prescribed 5-HT3 receptor antagonists for nausea and vomiting control.

Our product is manufactured under stringent quality control protocols compliant with international pharmacopeial standards, ensuring batch-to-batch consistency and suitability for regulated pharmaceutical development.

Handling and Storage

Store in a cool, dry, and well-closed container. Protect from moisture, direct sunlight, and excessive heat. Standard industrial hygiene practices should be followed during handling.

Packaging

Supplied in 25 kg fiberboard drums with inner polyethylene liners, or customized packaging per client requirements.