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21309-15-9

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21309-15-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21309-15-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,3,0 and 9 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 21309-15:
(7*2)+(6*1)+(5*3)+(4*0)+(3*9)+(2*1)+(1*5)=69
69 % 10 = 9
So 21309-15-9 is a valid CAS Registry Number.

21309-15-9Downstream Products

21309-15-9Relevant articles and documents

Synthesis of substituted tetrahydrofurans via intermolecular reactions of γ-chlorocarbanions of 3-substituted 3-chloro-propylphenyl sulfones with aldehydes

Brandt, Agnieszka,Wojtasiewicz, Anna,?niezek, Marcin,Makosza, Mieczys?aw

experimental part, p. 3378 - 3385 (2010/06/20)

Carbanions of 3-substituted-3-chloropropyl phenyl sulfones add to carbonyl groups of aldehydes to produce aldol type adducts that undergo 1,5-intramolecular substitution giving 2,3,5-trisubstituted tetrahydrofurans. The effect of substituents in the 3-pos

Reactivity of bifunctional olefins with hydrazine hydrate - Part II

Bhaskar Reddy,Rajagopal Sarma,Somasekhar Reddy,Subba Reddy

, p. 901 - 903 (2007/10/03)

The reaction of 1-aroyl-2-arylsulfonylethenes 1 with different ratios of hydrazine hydrate lead to hydrazones, dimerized products and 2-pyrazolines. The reactivity of pyrazolines has also been studied by dehydrogenation, pyrolysis, nitrosation and acylation.

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