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2,9-Undecadiyne, with the molecular formula C11H18, is a colorless liquid characterized by a distinctive odor. It is insoluble in water but readily miscible with organic solvents. 2,9-Undecadiyne is recognized for its high reactivity, making it a versatile intermediate in various chemical syntheses, including the production of pharmaceuticals, pesticides, and other organic chemicals. It also serves as a precursor in the synthesis of polymers and modified hydrocarbons. Due to its toxic and flammable nature, handling and storage require strict safety measures.

1785-53-1

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1785-53-1 Usage

Uses

Used in Pharmaceutical Synthesis:
2,9-Undecadiyne is used as a chemical intermediate for the synthesis of various pharmaceutical compounds. Its high reactivity allows for the creation of a wide range of medicinal agents, contributing to the development of new treatments and therapies.
Used in Pesticide Production:
In the agricultural sector, 2,9-Undecadiyne serves as a key intermediate in the production of pesticides. Its role in the synthesis of these chemicals helps in the development of effective pest control solutions.
Used in Organic Chemical Synthesis:
2,9-Undecadiyne is utilized as a versatile intermediate in the synthesis of a broad spectrum of organic chemicals, showcasing its applicability across different chemical industries.
Used in Polymer Production:
2,9-Undecadiyne is used as a precursor in the production of polymers, contributing to the development of new materials with specific properties for various applications.
Used in Modified Hydrocarbon Synthesis:
As a precursor, 2,9-Undecadiyne is involved in the synthesis of modified hydrocarbons, which are important in the creation of advanced materials and compounds with tailored characteristics.
Used in Organic Synthesis Reactions:
Due to its high reactivity, 2,9-undecadiyne is used in various organic synthesis reactions, including cross-coupling reactions and other transformations, enabling the production of complex organic molecules for diverse applications.

Check Digit Verification of cas no

The CAS Registry Mumber 1785-53-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,7,8 and 5 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1785-53:
(6*1)+(5*7)+(4*8)+(3*5)+(2*5)+(1*3)=101
101 % 10 = 1
So 1785-53-1 is a valid CAS Registry Number.
InChI:InChI=1/C11H16/c1-3-5-7-9-11-10-8-6-4-2/h7-11H2,1-2H3

1785-53-1SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name undeca-2,9-diyne

1.2 Other means of identification

Product number -
Other names Undeca-2,9-diin

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:1785-53-1 SDS

1785-53-1Relevant academic research and scientific papers

Cyclic Diynes by Alkyne Metathesis

Hellbach, Bjoern,Gleiter, Rolf,Rominger, Frank

, p. 2535 - 2541 (2007/10/03)

The preparation of α,ω-diynes with methyl groups at the termini (11a-i) is described. The methylene groups between the alkyne units vary between n = 12 (a) and n = 4 (i). Ring closing metathesis with Mo(CO) 6/CF3C6H4OH yielded the monocyclic alkyne 12a with 11a as starting material, whereas 11b-g yielded the cyclic diynes 13b-g. Detailed structural parameters were obtained for 13b and 13c by X-ray crystallography.

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