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90433-71-9

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90433-71-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90433-71-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,4,3 and 3 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 90433-71:
(7*9)+(6*0)+(5*4)+(4*3)+(3*3)+(2*7)+(1*1)=119
119 % 10 = 9
So 90433-71-9 is a valid CAS Registry Number.

90433-71-9Downstream Products

90433-71-9Relevant articles and documents

Synthesis and Absolute Configuration of (-)-Rothrockene, a Non-Head-To-Tail Monoterpene

Barbachyn, Michael R.,Johnson, Carl R.,Glick, Milton D.

, p. 2746 - 2748 (2007/10/02)

The total synthesis of (-)-rothrockene, trans-1-(1-methylethenyl)-2-(2-methyl-1-propenyl)cyclopropane, and its enantiomer is described.Utilization of (-)-(R)-N,S-dimethyl-S-phenylsulfoximine in the synthesis allowed for resolution of a precursor, regio- and diastereoface selectivity in a Simmons-Smith cyclopropanation, determination of absolute configuration based on X-ray crystallography, and introduction of a side-chain double bond.The absolute configuration of the natural substance is shown to be 1R,2S.

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