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909728-26-3

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909728-26-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 909728-26-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,9,7,2 and 8 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 909728-26:
(8*9)+(7*0)+(6*9)+(5*7)+(4*2)+(3*8)+(2*2)+(1*6)=203
203 % 10 = 3
So 909728-26-3 is a valid CAS Registry Number.

909728-26-3Relevant articles and documents

Aldol condensations of aldehydes and ketones catalyzed by rare earth(III) perfluorooctane sulfonates in fluorous solvents

Yi, Wen-Bin,Cai, Chun

, p. 1553 - 1558 (2005)

Rare earth(III) perfluorooctane sulfonates (RE(OPf)3) catalyze the efficient aldol condensation of different ketones with various aromatic aldehydes in fluorous solvents without the occurrence of any self-condensations. By simple separation of the fluorous phase containing only catalyst, reaction can be repeated several times.

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