Description

Carbamic Acid, (3-Hydroxy-6-Oxo-1,4-Cyclohexadien-1-Yl)-, 1,1-Dimethylethyl Ester (9Ci) is a specialized organic compound featuring a carbamate-protected quinone or hydroquinone moiety, which is a key intermediate in advanced synthetic chemistry. This compound matters for its role as a protected synthon in the multi-step synthesis of complex molecules, particularly in pharmaceutical research and development. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and fine chemical industries for constructing active pharmaceutical ingredients (APIs) and other high-value specialty chemicals.

Application

• Pharmaceutical Intermediate: A critical building block in the synthesis of novel drug candidates, particularly those with quinone-based structures.
• Agrochemical Synthesis: Used in the research and development of advanced pesticides and herbicides.
• Fine Chemical Production: Serves as a key precursor for dyes, pigments, and other performance chemicals.
• Academic & Contract Research: Employed in university and CRO laboratories for methodological studies and complex molecule construction.
• Chemical Biology Probes: Potential use in developing molecular probes for studying enzymatic and biological pathways.

Basic Information

Product Name	Carbamic Acid, (3-Hydroxy-6-Oxo-1,4-Cyclohexadien-1-Yl)-, 1,1-Dimethylethyl Ester (9Ci)
CAS No.	321528-57-8
Molecular Formula	C11H15NO4
Molecular Weight	225.24 g/mol
Synonyms	tert-Butyl N-(3-hydroxy-6-oxocyclohexa-1,4-dien-1-yl)carbamate; 1,1-Dimethylethyl (3-hydroxy-6-oxo-1,4-cyclohexadien-1-yl)carbamate; BOC-Protected Aminohydroquinone; tert-Butyl (3-hydroxy-6-oxo-1,4-cyclohexadienyl)carbamate; Carbamic acid, N-(3-hydroxy-6-oxo-1,4-cyclohexadien-1-yl)-, 1,1-dimethylethyl ester; (3-Hydroxy-6-oxocyclohexa-1,4-dien-1-yl)carbamic acid tert-butyl ester
EINECS	Contact for details

Quality Control

Our Carbamic Acid, (3-Hydroxy-6-Oxo-1,4-Cyclohexadien-1-Yl)-, 1,1-Dimethylethyl Ester (9Ci) is produced under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. Certificates of Analysis (COA) with full traceability are available upon request. We support development and cGMP-grade production for pharmaceutical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). This compound is light-sensitive and may be hygroscopic; therefore, containers should be kept sealed under an inert atmosphere (e.g., nitrogen or argon) for long-term storage to prevent degradation and moisture absorption.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.