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21310-05-4

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21310-05-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21310-05-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,3,1 and 0 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 21310-05:
(7*2)+(6*1)+(5*3)+(4*1)+(3*0)+(2*0)+(1*5)=44
44 % 10 = 4
So 21310-05-4 is a valid CAS Registry Number.

21310-05-4Downstream Products

21310-05-4Relevant articles and documents

A novel copper-catalyzed reductive coupling of N-tosylhydrazones with H-phosphorus oxides

Wu, Lei,Zhang, Xiao,Chen, Qing-Qing,Zhou, An-Kun

supporting information, p. 7859 - 7862 (2013/06/27)

We report here a novel C(sp3)-P bonds formation via copper-catalyzed reductive coupling of N-tosylhydrazones with H-phosphorus oxides. A variety of aliphatic and aromatic substrates bearing electron-rich and electron-deficient substituents affords phosphine oxide derivatives with moderate to good yields. This work suggests a new transformation of aldehydes/ketones via N-tosylhydrazones to organophosphorus compounds.

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