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[1α,3β]-1,3-bis[(tetrahydro-2H-pyran-2-yl)oxy]androst-5-en-17-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

81089-21-6

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81089-21-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81089-21-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,0,8 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81089-21:
(7*8)+(6*1)+(5*0)+(4*8)+(3*9)+(2*2)+(1*1)=126
126 % 10 = 6
So 81089-21-6 is a valid CAS Registry Number.

81089-21-6Relevant academic research and scientific papers

Method of treatment

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, (2008/06/13)

The present invention relates to a method of treating osteoporosis by administering to a host suffering from osteoporosis an effective amount of 24,24-difluoro-1α,25-dihydroxycholecalciferol.

Process for the preparation of 24,24-difluoro-1α,25-dihydroxy vitamin D3 and intermediates obtained therefrom

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, (2008/06/13)

The present invention relates to a process and intermediates for the preparation of 24,24-difluoro-1α,25-dihydroxycholecalciferol from the readily-available 1α,3β-dihydroxyandrost-5-en-17-one which is made by a known microbiological process from 3β-hydroxyandrost-5-en-17-one [R. M. Dodson, A. H. Goldkamp and R. D. Muir, J. Amer. Chem. Soc. 82 4026 (1960)].

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