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152429-52-2

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152429-52-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 152429-52-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,2,4,2 and 9 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 152429-52:
(8*1)+(7*5)+(6*2)+(5*4)+(4*2)+(3*9)+(2*5)+(1*2)=122
122 % 10 = 2
So 152429-52-2 is a valid CAS Registry Number.

152429-52-2Relevant articles and documents

Synthesis of a Stereoisomer of Frullanolide Utilizing the Intamolecular Cyclization of ω-Formyl-2-alkenylsilane

Kuroda, Chiaki,Shimizu, Shigeru,Haishima, Takahiro,Satoh, James Y.

, p. 2298 - 2303 (2007/10/02)

Synthesis of 10-epi-frullanolide (3) is reported via the intramolecular cyclization of ω-formyl-α-trimethylsilylmethyl-α,β-unsaturated ester.The cyclization precursor, ethyl (Z)-5-(2-formyl-1,3-dimethyl-2-cyclohexenyl)-2-trimethylsilylmethyl-2-pentenoate (17), was prepared from 2,6-dimethyl-2-cyclohexen-1-one through the dialdehyde monoacetal as the key intermediate.Cyclization of 17 with tetrabutylammonium fluoride produced the hydroxy ester having C(6α)-H and C(7β)-H, which was hydrolyzed, then subjected to Fujisawa's lactonization to afford 3.

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