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137443-32-4

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137443-32-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137443-32-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,4,4 and 3 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 137443-32:
(8*1)+(7*3)+(6*7)+(5*4)+(4*4)+(3*3)+(2*3)+(1*2)=124
124 % 10 = 4
So 137443-32-4 is a valid CAS Registry Number.

137443-32-4Downstream Products

137443-32-4Relevant articles and documents

4-Hydroxytetrahydropyran-2-one derivatives

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, (2008/06/13)

4-hydroxytetrahydropyran-2-one derivatives with general formula (I) are useful as cholesterol reducing agents as well as lipid reducing agents, serving as inhibitors of HMG-CoA reductase, and capable of inhibiting the biosynthesis of peroxidized lipids, and therefore effective for curing arteriosclerosis: STR1 wherein R1 represent hydrogen or a 2-tetrahydropyranyl group; R2 and R3 each represent hydrogen or an alkyl group having 1 to 6 carbon atoms; R4 represents hydrogen, an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an aryl group, an aralkyl group, an acyl group, an aroyl group or a substituted sulfonyl group; A represents --CH2 CH2 --, or --CH=CH--; and n is an integer of 1 or 2, and intermediates for synthesizing the 4-hydroxytetrahydropyran-2-one derivatives are disclosed.

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