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21634-43-5

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21634-43-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21634-43-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,6,3 and 4 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 21634-43:
(7*2)+(6*1)+(5*6)+(4*3)+(3*4)+(2*4)+(1*3)=85
85 % 10 = 5
So 21634-43-5 is a valid CAS Registry Number.

21634-43-5Relevant articles and documents

Vinyl nosylates: An ideal partner for palladium-catalyzed cross-coupling reactions

Cheval, Nicolas P.,Dikova, Anna,Blanc, Aurelien,Weibel, Jean-Marc,Pale, Patrick

, p. 8765 - 8768 (2013)

In a hurry to leave! Nosylates act as an excellent leaving group in various palladium-catalyzed cross-couplings, such as Suzuki, Stille, Heck, and Sonogashira reactions (see scheme). Crystalline, stable, and cheap vinyl and aryl nosylates proved better th

Syntheses of angucyclinones related to ochromycinone

Rozek, Tomas,Janowski, Wit,Hevko, John M.,Tiekink, Edward R.T.,Dua, Suresh,Stone, David J.M.,Bowie, John H.

, p. 515 - 525 (2007/10/03)

Two synthetic approaches have been investigated for the syntheses of model angucyclinones related to ochromycinone. The first involves a Diels-Alder/Friedel-Crafts strategy in which the Diels-Alder adduct formed between dimethyl acetylenedicarboxylate and

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