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Precision Method for Determination of Pore Structure by Photographic Photometry

✍ Scribed by COHEN, JULIUS; SANDOR, AURELIUS

Book ID
115379817
Publisher
Optical Society of America
Year
1961
Weight
724 KB
Volume
51
Category
Article
ISSN
0030-3941

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## Abstract A useful method for the assignment of hydroxyl groups in steroids is described in which hydroxy‐steroids are reacted with trifluoroacetic anhydride. The δ‐values of the CF~3~ signals from the resulting trifluoroacetates characterize the positions of the trifluoroacetylated hydroxyl grou