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22422-16-8

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22422-16-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 22422-16-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,4,2 and 2 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 22422-16:
(7*2)+(6*2)+(5*4)+(4*2)+(3*2)+(2*1)+(1*6)=68
68 % 10 = 8
So 22422-16-8 is a valid CAS Registry Number.

22422-16-8Relevant articles and documents

Antifungal cyclopentenediones from Piper coruscans

Li, Xing-Cong,Ferreira, Daneel,Jacob, Melissa R.,Zhang, Qifeng,Khan, Shabana I.,ElSohly, Hala N.,Nagle, Dale G.,Smillie, Troy J.,Khan, Ikhlas A.,Walker, Larry A.,Clark, Alice M.

, p. 6872 - 6873 (2004)

Coruscanones A and B, two new antifungal cyclopentenedione derivatives, have been isolated from Piper coruscans and their structures elucidated by spectroscopic and chemical methods. Coruscanone A exhibits significant antifungal activity against Candida a

Vanadium-Catalyzed Coupling of Allenols with Electrophilic Halide Sources for the Formation of α-Halo-α′,β′-unsaturated Ketones

Trost, Barry M.,Tracy, Jacob S.,Yusoontorn, Tas

supporting information, p. 1207 - 1211 (2019/02/14)

A vanadium-catalyzed coupling of allenylic alcohols with electrophilic halide sources to form α-halo-α′,β′-unsaturated ketones is described. The process proceeds through a metal enolate formed from the 1,3-transposition of an allenol that is initiated by

Synthesis of α,β-unsaturated α′-haloketones through the chemoselective addition of halomethyllithiums to Weinreb amides

Pace, Vittorio,Castoldi, Laura,Holzer, Wolfgang

, p. 7764 - 7770 (2013/09/02)

A straightforward synthesis of variously functionalized α,β-unsaturated α′-haloketones has been achieved through the chemoselective addition of halomethyllithium carbenoids to Weinreb amides at -78 C. A comparative study employing the corresponding esters under the same reaction conditions pointed out that the instability of the tetrahedral intermediate formed from the latter is responsible for the observed formation of carbinols instead of the desired haloketones.

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