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96685-52-8

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96685-52-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 96685-52-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,6,6,8 and 5 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 96685-52:
(7*9)+(6*6)+(5*6)+(4*8)+(3*5)+(2*5)+(1*2)=188
188 % 10 = 8
So 96685-52-8 is a valid CAS Registry Number.

96685-52-8Upstream product

96685-52-8Relevant articles and documents

Vitamin D3 synthetic studies. Intramolecular Diels-Alder approaches to the CD-ring fragment

Clasby, Martin C.,Craig, Donald,Jaxa-Chamiec, Albert A.,Lai, Justine Y. Q.,Marsh, Andrew,Slawin, Alexandra M. Z.,White, Andrew J. P.,Williams, David J.

, p. 4769 - 4802 (2007/10/03)

The enantiospecific synthesis of the vitamin D3 CD ring fragment 3 is reported. Key steps are the diastereoselective allylation of a norephedrine/dihydrocitronellic acid-derived oxazolidinone, and the intramolecular Diels-Alder reaction of a sulfonyl-substituted dienyne. The analogous cycloaddition reaction of a trienylsulfone substrate is shown to give products having the incorrect stereochemistry for vitamin D3 synthesis.

Vitamin-D3-Synthesestudien: enantiospezifische Synthese des CD-Ring-Fragmentes von Vitamin D3

Clasby, Martin C.,Craig, Donald,Marsh, Andrew

, p. 1495 - 1497 (2007/10/02)

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A GENERAL METHOD FOR THE STEREOSELECTIVE CONSTRUCTION OF DES-AB-CHOLESTANES. A FIRST TOTAL SYNTHESIS OF (+)-8α-PHENYLSULFONYL-DES-AB-CHOLESTANE

Nemoto, Hideo,Kurobe, Hiroshi,Fukomoto, Keiichiro,Kametani, Tetsuji

, p. 259 - 262 (2007/10/02)

(+)-8α-Phenylsulfonyl-des-AB-cholestane, a potential intermediate of vitamin D3, was stereoselectively synthesized from (-)-indanone derivative possessing the required chiralities, at the C13, C14, C17, and C20

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