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128622-75-3

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128622-75-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128622-75-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,6,2 and 2 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 128622-75:
(8*1)+(7*2)+(6*8)+(5*6)+(4*2)+(3*2)+(2*7)+(1*5)=133
133 % 10 = 3
So 128622-75-3 is a valid CAS Registry Number.

128622-75-3Downstream Products

128622-75-3Relevant articles and documents

STEREOCHEMISTRY OF THE ADDITION OF α-METALLATED N,N-DIMETHYLSULFONAMIDES TO 4-t-BUTYLCYCLOHEXANONE

Mladenova, Margarita,Gaudemar-Bardone, Francoise

, p. 191 - 197 (2007/10/02)

The effects of some reaction conditions on the aldol reaction of RCH(M)SO2N(CH3)2 and product stereochemistries are reported.Under thermodynamic control the reaction is nonstereoselective.Under kinetic control, stereoselectivity varies with R.For R = H, axial attack is slightly favoured, while equatorial attack is dominant for R = CH3.Dimethyl phenylmethanesulfonamide reacts highly stereoselectively.Equatorial attack is favoured with M = MgCl and M = Li, while M = Na gives 100percent axial attack.These, and several more observations cannot be interpreted in terms of current concepts of nucleophilic additions to 4-t-butylcyclohexanone.

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