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19,19-difluoroprevitamin D3 is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

73197-96-3

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73197-96-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 73197-96-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,1,9 and 7 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 73197-96:
(7*7)+(6*3)+(5*1)+(4*9)+(3*7)+(2*9)+(1*6)=153
153 % 10 = 3
So 73197-96-3 is a valid CAS Registry Number.

73197-96-3Downstream Products

73197-96-3Relevant academic research and scientific papers

Influence of Fluorine and Oxygen Atoms at C-19 on the Previtamin D-Vitamin D Interconversion

Sialom, Bonita,Mazur, Yehuda

, p. 2201 - 2204 (2007/10/02)

19,19-Difluorocholesteryl acetate (6), prepared by fluorination of 19-oxocholesteryl acetate (5), was converted to the respective 5,7-diene (7) which, on irradiation, gave both 19,19-difluoroprevitamin D3 (8) and 19,19-difluorotachysterol (9).O

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