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143724-97-4

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143724-97-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 143724-97-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,7,2 and 4 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 143724-97:
(8*1)+(7*4)+(6*3)+(5*7)+(4*2)+(3*4)+(2*9)+(1*7)=134
134 % 10 = 4
So 143724-97-4 is a valid CAS Registry Number.

143724-97-4Relevant articles and documents

Short and efficient chemoenzymatic synthesis of goniothalamin

Gruttadauria, Michelangelo,Lo Meo, Paolo,Noto, Renato

, p. 83 - 85 (2007/10/03)

A high-yielding three-step synthesis of goniothalamin involving an enzymatic kinetic resolution in the presence of vinyl acrylate followed by ring-closing metathesis is discussed.

Stereocontrolled Route to the δ-Benzylidenemethyl-β-hydroxy-δ-lactone System Utilizing a New Chiral Epoxyacetylene Building Block

Takano, Seiichi,Kamikubo, Takashi,Sugihara, Takumichi,Ogasawara, Kunio

, p. 853 - 856 (2007/10/02)

Stereocontrolled route to the δ-benzylidenemethyl-β-hydroxy-δ-lactone system has been developed utilizing a new epoxyacetylene building block prepared from optically active epichlorohydrin.The present synthesis allowed efficient construction of goniothalamin in natural and unnatural forms and its 3-hydroxy derivative having the essential anti-β/δ-stereochemistry for HMG Co-A reductase inhibition.

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