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58006-28-3

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58006-28-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 58006-28-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,8,0,0 and 6 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 58006-28:
(7*5)+(6*8)+(5*0)+(4*0)+(3*6)+(2*2)+(1*8)=113
113 % 10 = 3
So 58006-28-3 is a valid CAS Registry Number.

58006-28-3Downstream Products

58006-28-3Relevant articles and documents

Novel versatile approach to an enantiopure 19-nor, des-C,D vitamin D3 derivative

Hilpert, Hans,Wirz, Beat

, p. 681 - 694 (2007/10/03)

A short and efficient de novo route to the des-C,D vitamin D3 derivative 3 (Ro 65-2299), a potential antipsoriatic, has been developed. This route features an assembly strategy so far unexplored in vitamin D chemistry involving a modified Julia olefination of the A-ring ketone 30 and the 2-benzothiazolyl sulfone 60. Construction of the A-ring building block was accomplished by an efficient three-step route starting from the meso trans-1,3,5-cyclohexane triol (26), which was desymmetrized by a highly selective enzymatic mono-hydrolysis of the corresponding triacetate 27 followed by oxidation of the alcohol 29 to give the homochiral diacetoxy ketone 30 (ee=99.5%) in 83% overall yield. Furthermore, we found efficient and practical syntheses of the 5-acetoxy-2-cyclohexenone (31) and its enantiomer 32, both new building blocks useful for natural product synthesis.

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