Description

Carbamic Acid, [1-(2-Propynyl)-3-Butynyl]-, 1,1-Dimethylethyl Ester (9Ci) is a specialized organic compound with the CAS registry number 181478-03-5. This molecule is valued as a versatile chemical building block and advanced synthetic intermediate in modern organic synthesis. It is primarily sought by R&D chemists and process development scientists in the pharmaceutical and agrochemical industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those requiring complex alkyne-functionalized scaffolds.
• Agrochemical Synthesis: Used in the research and development of new generation herbicides, fungicides, and plant growth regulators.
• Material Science Research: Serves as a monomer or cross-linking agent in the development of specialty polymers and advanced functional materials.
• Chemical Biology & Proteomics: Employed as a probe or linker molecule in bio-conjugation chemistry and target identification studies.
• Organic Synthesis: A versatile building block for click chemistry applications, including Huisgen cycloaddition, due to its multiple alkyne functionalities.
• Academic & Industrial R&D: Utilized in methodological development and exploratory chemistry for creating new carbon-carbon and carbon-heteroatom bonds.

Basic Information

Product Name	Carbamic Acid, [1-(2-Propynyl)-3-Butynyl]-, 1,1-Dimethylethyl Ester (9Ci)
CAS No.	181478-03-5
Molecular Formula	C14H19NO2
Molecular Weight	233.31 g/mol
Synonyms	tert-Butyl N-[1-(but-3-yn-1-yl)but-3-yn-1-yl]carbamate; tert-Butyl (1-(but-3-yn-1-yl)but-3-yn-1-yl)carbamate; 1,1-Dimethylethyl N-[1-(3-butynyl)-3-butynyl]carbamate; N-[1-(But-3-yn-1-yl)but-3-yn-1-yl]carbamic acid tert-butyl ester; BOC-protected diyne amine; Diyne BOC-amine; tert-Butyl (1-(but-3-ynyl)but-3-ynyl)carbamate
EINECS	Contact for details

Quality Control

Every batch of our Carbamic Acid, [1-(2-Propynyl)-3-Butynyl]-, 1,1-Dimethylethyl Ester (9Ci) is produced and controlled under a strict quality management system. We ensure high purity and batch-to-batch consistency through advanced analytical techniques including HPLC, GC, and NMR. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality and regulatory requirements.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, and well-ventilated place. Recommended storage temperature is 2-8°C for long-term stability. Allow the sealed container to reach room temperature before opening to prevent moisture condensation.

Specification

Item	Specification
Appearance	White to off-white solid or 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%

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