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134962-99-5

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134962-99-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 134962-99-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,9,6 and 2 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 134962-99:
(8*1)+(7*3)+(6*4)+(5*9)+(4*6)+(3*2)+(2*9)+(1*9)=155
155 % 10 = 5
So 134962-99-5 is a valid CAS Registry Number.

134962-99-5Relevant articles and documents

Prenylation reaction performed with catalytically generated potassium prenal dienolate

Cahard, Dominique,Duhamel, Lucette,Lecomte, Sandrine,Poirier, Jean-Marie

, p. 1399 - 1401 (2007/10/03)

A new prenylation method based on the reaction of catalytically generated potassium dienolate of prenal with α,β-unsaturated aldehydes is described. The reaction is highly regioselective, via a γ-1,2-addition, and provides an efficient route to retinal.

A new prenylation method using the lithium enolate of prenal. Reaction with polyunsaturated aldehydes. A short access to retinal

Duhamel, Lucette,Guillemont, Jerome,Poirier, Jean-Marie,Chabardes, Pierre

, p. 4499 - 4500 (2007/10/02)

The enolate of prenal 1 prepared from the corresponding silyl enol ether 2 or enol acetate 3 led to a γ-regiospecific reaction with polyunsaturated aldehydes 4 yielding dihydropyrans 5 leading after hydrolysis to polyenals 7. This process allows the introduction of the isoprenyl skeleton. A synthesis of retinal, from β-ionylidenacetaldehyde is reported.

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