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31222-15-8

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31222-15-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 31222-15-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,2,2 and 2 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 31222-15:
(7*3)+(6*1)+(5*2)+(4*2)+(3*2)+(2*1)+(1*5)=58
58 % 10 = 8
So 31222-15-8 is a valid CAS Registry Number.

31222-15-8Relevant articles and documents

PROCESS FOR THE PREPARATION OF OPTICALLY-ACTIVE COMPOUNDS

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Page/Page column 11-13, (2008/06/13)

A method of preparing enatiomerically enriched 3a,6,6,9a-tetramethyl-dodecahydro-naphtho[2,1-b]furan, formula (I), from (E,E)- homofarnesic acid or (E)-monocyclohomofarnesic acid by (a) reacting firstly with a chiral alcohol, (b) reacting the product of (a) with an acid to cause a first cyclisation, (c) producing an alcohol by reacting the product of (b) with a reducing agent and (d) causing a second cyclisation by reacting the product of (c) with an acid. The product of this process gives a mixture of both enantiomers with one in excess.

Total Synthesis of (-)-Ambrox from S-(+)-Carvone (part 6)

Verstegen-Haaksma, Anja A.,Swarts, Henk J.,Jansen, Ben J. M.,Groot, Aede de

, p. 10095 - 10106 (2007/10/02)

Conjugate addition of cyanide and allyl nucleophiles to S-(+)-carvone followed by annulation with methyl vinyl ketone gave the substituted decalones 2 and 3 stereoselectively.Both decalones were transformed into (-)-Ambrox via modification of the sidechain, methylation, conversion of the isopropenyl group and cyclization.

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