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(5E)-vitamin D2 3-tert-butyldiphenylsilyl ether is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

336128-23-5

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336128-23-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 336128-23-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,6,1,2 and 8 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 336128-23:
(8*3)+(7*3)+(6*6)+(5*1)+(4*2)+(3*8)+(2*2)+(1*3)=125
125 % 10 = 5
So 336128-23-5 is a valid CAS Registry Number.

336128-23-5Upstream product

336128-23-5Relevant academic research and scientific papers

(10Z)- and (10E)-19-fluoro-1 α,25-dihydroxyvitamin D3: An improved synthesis via 19-nor-10-oxo-vitamin D

Shimizu,Ohno,Yamada

, p. 312 - 317 (2001)

An efficient synthetic route to (10Z)- and (10E)-19-fluoro-1α,25-dihydroxyvitamin D3 was developed. The key feature of this pathway is the introduction of a 19-fluoromethylene group to a (5E)-19-nor-10-oxo-vitamin D derivative. The 10-oxo-compo

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