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93729-29-4

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93729-29-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 93729-29-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,3,7,2 and 9 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 93729-29:
(7*9)+(6*3)+(5*7)+(4*2)+(3*9)+(2*2)+(1*9)=164
164 % 10 = 4
So 93729-29-4 is a valid CAS Registry Number.

93729-29-4Relevant articles and documents

Chemodivergent Synthesis of Oxazoles and Oxime Ethers Initiated by Selective C-N/C-O Formation of Oximes and Diazo Esters

Qi, Zhenjie,Wang, Shaozhong

supporting information, p. 8549 - 8553 (2021/10/25)

Chemodivergent reactions of oximes and diazo esters involving Rh-catalyzed [3+2] annulation and photodriven O-H insertion have been developed to generate oxazoles and oxime ethers. A range of aldehyde and ketone oximes reacted with α-diazocarbonyl compounds in a controllable manner in which functional groups, including ketone, ester, amide, ether, thiol ether, silane, alkene, allene, and alkyne groups, were well tolerated.

Electrochemical Iodine-Mediated Oxidation of Enamino-Esters to 2H-Azirine-2-Carboxylates Supported by Design of Experiments

Babaoglu, Emre,Hilt, Gerhard

, p. 8879 - 8884 (2020/07/15)

An electrochemical iodine-mediated transformation of enamino-esters for the synthesis of 2H-azirine-2-carboxylates is presented. In addition, a thermic conversion of azirines to 4-carboxy-oxazoles in quantitative yield without purification was described.

A Gold-Catalyzed Acid-Assisted Regioselective Cyclization for the Synthesis of Polysubstituted Oxazoles

Wang, Qian,Hoffmann, Stephanie,Schie?l, Jasmin,Rudolph, Matthias,Rominger, Frank,Hashmi, A. Stephen K.

, p. 2384 - 2388 (2020/03/19)

Polysubstituted oxazole derivatives are obtained through a regioselective gold-catalyzed reaction of α-alkynylamides and alkynoates in the presence of nitriles. The intermediary obtained gold carbenes are generated by alkyne oxidation with a pyridine N-oxide. Acidic conditions ensure that only one of the two carbonyl oxygen atoms in these intermediates selectively cyclizes to the products in excellent yields.

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