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251374-33-1

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251374-33-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 251374-33-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,1,3,7 and 4 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 251374-33:
(8*2)+(7*5)+(6*1)+(5*3)+(4*7)+(3*4)+(2*3)+(1*3)=121
121 % 10 = 1
So 251374-33-1 is a valid CAS Registry Number.

251374-33-1Upstream product

251374-33-1Downstream Products

251374-33-1Relevant articles and documents

Ruthenium-catalyzed formation of pyrazoles or 3-hydroxynitriles from propargyl alcohols and hydrazines

Kaufmann, Julia,J?ckel, Elisabeth,Haak, Edgar

supporting information, p. 91 - 101 (2019/07/09)

Functionalized pyrazoles are generated from secondary propragyl alcohols and hydrazines in a ruthenium-catalyzed cascade process, consisting of redox isomerization, Michael addition, cyclocondensation and dehydrogenation steps. The same bifunctional catalyst mediates the conversion of tertiary propargyl alcohols with hydrazine to 3-hydroxynitriles via anti-Markovnikov hydroamination followed by elimination of ammonia.

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