Welcome to LookChem.com Sign In|Join Free

CAS

  • or

81002-19-9

Post Buying Request

81002-19-9 Suppliers

Recommended suppliersmore

  • Product
  • FOB Price
  • Min.Order
  • Supply Ability
  • Supplier
  • Contact Supplier

81002-19-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81002-19-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,0,0 and 2 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 81002-19:
(7*8)+(6*1)+(5*0)+(4*0)+(3*2)+(2*1)+(1*9)=79
79 % 10 = 9
So 81002-19-9 is a valid CAS Registry Number.

81002-19-9Relevant articles and documents

Double asymmetric induction as a mechanistic probe: The doubly diastereoselective conjugate addition of enantiopure lithium amides to enantiopure α,β-unsaturated esters and enantiopure α,β-unsaturated hydroxamates

Davies, Stephen G.,Lee, James A.,Roberts, Paul M.,Thomson, James E.,Yin, Jingda

, p. 6382 - 6403 (2011/09/19)

The doubly diastereoselective conjugate addition of the antipodes of lithium N-benzyl-N-(α-methylbenzyl)amide to a range of enantiopure α,β-unsaturated esters [derived from Corey's 8-phenylmenthol chiral auxiliary] and enantiopure α,β-unsaturated hydroxamates [derived from our 'chiral Weinreb amide' auxiliary (S)-N-1-(1′-naphthyl)ethyl-O-tert- butylhydroxylamine] has been used as a mechanistic probe to determine the reactive conformations of these acceptors.

THE RACEMIC FORM AND THE TWO ENANTIOMERS OF 4-METHYL-1-NONANOL, A SEX ATTRACTANT OF THE YELLOW MEALWORM, Tenebrio molitor L.

Carpita, Adriano,Magistris, Elisabetta De,Rossi, Renzo

, p. 99 - 106 (2007/10/02)

The racemic form of 4-methyl-1-nonanol, (R)(S)-1, a sex attractant secreted by the female of the yellow mealworm, has been synthesized in 31 percent overall yield from commercially available methyl 2-octynoate, 2.Almost enantiomerically pure (R)- and (S)-1 have been stereospecifically synthesized in 21.3 and 23.9 percent overall yields, respectively, starting from methyl hydrogen (R)-3-methylglutarate, (R)-3.A precursor for (S)-1, i.e. (S)-3-methyloctanoic acid, (S)-4, has been also prepared in 84 percent yield and over 96 percent enantiomeric purity by the BF3-mediated 1,4-addition of n-pentylcopper to (-)-8-phenylmenthyl crotonate, 15, followed by saponification.The enantiomeric purities of methyl (R)-3-methyloctanoate, (R)-7, and (S)-3-methyl-1-octanol, (S)-8, have been determined by converting these compounds into (R)- and (S)-3-methyloctanoic acid, (R)-4 and (S)-4, respectively, followed by GLC analysis of the corresponding 1-(1-naphthyl)ethylamides obtained from nearly optically pure (R)-1-(1-naphthyl)ethylamine.

Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1

What can I do for you?
Get Best Price

Get Best Price for 81002-19-9