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201209-93-0

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201209-93-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 201209-93-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,1,2,0 and 9 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 201209-93:
(8*2)+(7*0)+(6*1)+(5*2)+(4*0)+(3*9)+(2*9)+(1*3)=80
80 % 10 = 0
So 201209-93-0 is a valid CAS Registry Number.

201209-93-0Downstream Products

201209-93-0Relevant articles and documents

Total Synthesis of the Alleged Structure of Crenarchaeol Enables Structure Revision**

Cunha, Ana V.,Havenith, Remco W. A.,Holzheimer, Mira,Minnaard, Adriaan J.,Schouten, Stefan,Sinninghe Damsté, Jaap S.

supporting information, p. 17504 - 17513 (2021/07/06)

Crenarchaeol is a glycerol dialkyl glycerol tetraether lipid produced exclusively in Archaea of the phylum Thaumarchaeota. This membrane-spanning lipid is undoubtedly the structurally most sophisticated of all known archaeal lipids and an iconic molecule in organic geochemistry. The 66-membered macrocycle possesses a unique chemical structure featuring 22 mostly remote stereocenters, and a cyclohexane ring connected by a single bond to a cyclopentane ring. Herein we report the first total synthesis of the proposed structure of crenarchaeol. Comparison with natural crenarchaeol allowed us to propose a revised structure of crenarchaeol, wherein one of the 22 stereocenters is inverted.

Enzymatic resolution of bicyclo[n.1.0]alkan-1-ols derivatives: Preparation of optically active α-substituted α-methylcycloalkanones

Morisson,Barnier,Blanco

, p. 7749 - 7764 (2007/10/03)

Optically active α-methyl α-substituted cycloalkanones are prepared by a chemoenzymatic sequence which involves a Lipozyme-catalyzed transesterification of 1-(chloroacetoxy)bicyclo[n.1.0]alkanes and ring opening of these cyclopropanol derivatives.

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