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149747-03-5

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149747-03-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 149747-03-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,9,7,4 and 7 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 149747-03:
(8*1)+(7*4)+(6*9)+(5*7)+(4*4)+(3*7)+(2*0)+(1*3)=165
165 % 10 = 5
So 149747-03-5 is a valid CAS Registry Number.

149747-03-5Relevant articles and documents

AGONISTS OF GPR40

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Page/Page column 160-161, (2012/02/05)

The present invention relates to compounds that have the ability to modulate the activity of GPR40 and are there-fore useful in the treatment of GPR40 related disorders. In addition the invention relates to the compounds, methods for their preparation, pharmaceutical compositions containing the compounds and the uses of these compounds in the treatment of certain disorders related to GPR40 activity.

Lewis Acid Mediated Nucleophilic Substitution Reactions of 2-Alkoxy-3,4-dihydro-2H-1-benzopyrans: Regiochemistry and Utility in the Synthesis of 3,4-Dihydro-2H-1-benzopyran-2-carboxylic Acids

Cohen, Noal,Schaer, Beatrice,Saucy, Gabriel,Borer, Rene,Todaro, Louis,Chiu, Anne-Marie

, p. 3282 - 3292 (2007/10/02)

The Lewis acid mediated nucleophilic substitution reactions of a variety of 2-alkoxy-, 2-hydroxy-, and 2-(acyloxy)-3,4-dihydro-2H-1-benzopyrans (chromans) have been studied within the context of developing new synthetic routes to chroman-2-carboxylic acids, certain of which have utility as antioxidants and drug intermediates.The scope and limitations of these transformations have been determined.Treatment of 2-methoxychromans in the α-tocopherol structural class (9, 25) with cyanotrimethylsilane in the presence of TiCl4 or BF3 etherate generally leads in good yield to the desired 2-cyanochromans 10 and 26.On the other hand, ketals of the type 19 react less efficiently, giving poor to moderate yields of the cyanochromans 36 along with regioisomeric products (37, 38).Spiro-fused ketals such as 28 exhibit dichotomous behavior dependent on the Lewis acid employed, while the pyranochroman 34b affords 35 in good yield.Thus the regioselectivity of these processes appears to be highly dependent on substrate structure and the nature of the Lewis acid.

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