Cas 501698-85-7,2H-Pyran-2-one, tetrahydro-3-(hydroxydiphenylmethyl)-

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Check Digit Verification of cas no

The CAS Registry Mumber 501698-85-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,1,6,9 and 8 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 501698-85:
(8*5)+(7*0)+(6*1)+(5*6)+(4*9)+(3*8)+(2*8)+(1*5)=157
157 % 10 = 7
So 501698-85-7 is a valid CAS Registry Number.

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501698-85-7Relevant academic research and scientific papers

The mukaiyama aldol reactions for congested ketones catalyzed by solid acid of tin(IV) ion-exchanged montmorillonite

Takehira, Satoshi,Masui, Yoichi,Onaka, Makoto

, p. 498 - 500 (2014/04/17)

Tin(IV) ion-exchanged montmorillonite (Sn-Mont) was found to be an excellent solid acid catalyst for the Mukaiyama aldol reactions of congested ketones with silicon enolates from ketones as well as esters. It was disclosed that Sn-Mont was far more active than other metal ion-or proton-exchanged montmorillonites and typical homogeneous acid catalysts such as TMSOTf and BF3?OEt2.

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