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107736-65-2

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107736-65-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 107736-65-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,7,7,3 and 6 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 107736-65:
(8*1)+(7*0)+(6*7)+(5*7)+(4*3)+(3*6)+(2*6)+(1*5)=132
132 % 10 = 2
So 107736-65-2 is a valid CAS Registry Number.

107736-65-2Relevant articles and documents

Synthesis of the optical antipodes of 4-alkyl-γ-lactones

Thijs, Lambertus,Waanders, Peter P.,Stokkingreef, Edwin H. M.,Zwanenburg, Binne

, p. 332 - 337 (2007/10/02)

Optical antipodes of 4-alkyl-γ-lactones 3 have been prepared by photochemical rearrangement of optically active α,β-epoxy diazomethyl ketones 1 in ethanol to give 4-hydroxy-alkenoates 2, followed by reduction of the alkene bond and subsequent lactonization.The required epoxy diazomethyl ketones 1 were obtained via the following sequence of reactions: alkylation of 2-propyn-1-ol, subsequent reduction to the alkenols 6, Sharpless epoxidation to 2,3-epoxy alcohols 7, oxidation to glycidic esters 8 and finally conversion to diazo ketones 1.The enantiomeric purities range from 84 to 100percent.

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