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41043-90-7

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41043-90-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 41043-90-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,1,0,4 and 3 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 41043-90:
(7*4)+(6*1)+(5*0)+(4*4)+(3*3)+(2*9)+(1*0)=77
77 % 10 = 7
So 41043-90-7 is a valid CAS Registry Number.

41043-90-7Downstream Products

41043-90-7Relevant articles and documents

Sn(OTf)2 as an effective lewis acid in reactions of cyclopropyl ketones with acetic anhydride: Application in the synthesis of a 19-Nor-B-homo steroid

Kranz, Darius Paul,Meier Zu Greffen, Aike,El Sheikh, Sherif,Neudoerfl, Joerg Martin,Schmalz, Hans-Guenther

, p. 2860 - 2866 (2011)

Attempts to convert 3β-acetoxy-5,19-cyclo-pregna-6,20-dione (8) into a cyclocitrinol-related steroid with a bicyclo[4.4.1]-undecane AB-ring substructure through a Lewis acid-assisted fragmentation failed. Instead, treating 8 with an excess of Ac2/su

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