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100727-43-3

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100727-43-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 100727-43-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,0,7,2 and 7 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 100727-43:
(8*1)+(7*0)+(6*0)+(5*7)+(4*2)+(3*7)+(2*4)+(1*3)=83
83 % 10 = 3
So 100727-43-3 is a valid CAS Registry Number.

100727-43-3Relevant articles and documents

1-Iodobuta-1,3-diynes in Copper-Catalyzed Azide-Alkyne Cycloaddition: A One-Step Route to 4-Ethynyl-5-iodo-1,2,3-triazoles

Govdi, Anastasia I.,Danilkina, Natalia A.,Ponomarev, Alexander V.,Balova, Irina A.

, (2019/02/14)

Cu-catalyzed 1,3-dipolar cycloaddition of iododiacetylenes with organic azides using iodotris(triphenylphosphine)copper(I) as a catalyst was found to be an efficient one-step synthetic route to 5-iodo-4-ethynyltriazoles. The reaction is tolerant to various functional groups in both butadiyne and azide moieties. The synthetic application of 5-iodo-4-ethynyl triazoles obtained was also evaluated: the Sonogashira coupling with alkynes resulted in unsymmetrically substituted triazole-fused enediyne systems, while the Suzuki reaction yielded the corresponding 5-aryl-4-ethynyl triazoles.

Copper Catalysis for Selective Heterocoupling of Terminal Alkynes

Su, Lebin,Dong, Jianyu,Liu, Long,Sun, Mengli,Qiu, Renhua,Zhou, Yongbo,Yin, Shuang-Feng

supporting information, p. 12348 - 12351 (2016/10/07)

A Cu-catalyzed selective aerobic heterocoupling of terminal alkynes is disclosed, which enables the synthesis of a broad range of unsymmetrical 1,3-diynes in good to excellent yields. The results disprove the long-held belief that homocouplings are exclusively favored in the Glaser-Hay reaction.

Synthesis and molecular properties of donor-π-spacer-acceptor ynamides with up to four conjugated alkyne units

Witulski, Bernhard,Schweikert, Torsten,Schollmeyer, Dieter,Nemkovich, Nicolai A.

supporting information; experimental part, p. 2953 - 2955 (2010/08/05)

A set of push-pull ynamides with up to four conjugated triple bonds has been synthesized and the molecular properties of these new carbon rods have been characterised showing effective intramolecular charge transfers and high values for the change of the

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