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128385-67-1

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128385-67-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128385-67-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,3,8 and 5 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 128385-67:
(8*1)+(7*2)+(6*8)+(5*3)+(4*8)+(3*5)+(2*6)+(1*7)=151
151 % 10 = 1
So 128385-67-1 is a valid CAS Registry Number.

128385-67-1Downstream Products

128385-67-1Relevant articles and documents

A Key Intermediate for the Chiral Synthesis of Elemanoids. Synthesis of (+)-β-Elemenone

Kato, Michiharu,Vogler, Bernhard,Tooyama, Youichi,Yoshikoshi,Akira

, p. 151 - 154 (2007/10/02)

(1R,5S)-3-Phenylsulfenyl-6,6-dimethylbicycloheptanone obtained from (+)-nopinone was transformed into (1R,4S,5S)-4-methyl-4-vinylbicycloheptan-2-one, whose cyclobutane ring was cleaved with BF3*EtO2-Zn(OAc)2 in acetic anhydride to provide (4S,5S)-1-acetoxy-4-isopropenyl-5-methyl-5-vinyl-1-cyclohexene (5), the key intermediate, in a highly regio- and stereoselective manner.Regioselective introduction of a three-carbon unit to 5 with acetone followed by dehydration yielded (+)-β-elemenone.

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