REARRANGEMENT STUDIES WITH C14: IX. THE FORMOLYSIS OF METHYL-C14-ISOPROPYLCARBINYL p-TOLUENESULPHONATE

The synthesis of 17-(methyl-C14)-testosterone and 21-C14-progesterone.

The use of steroid hormones containing tagged atoms promises to have an important part in the study of their metabolism. The relative availability of radioactive Cl4 manufactured in the uranium chain-reacting pile at Oak Ridge has facilitated the synthesis of such compounds containing labeled carbon atoms (1). Through the cooperation of Dr. Konrad Dobriner of the Sloan-Kettering Institute for C...

Metabolism of Coprostanol-c14 and Cholestanol-4-c14 in Man.

One-step preparation of C14-cyanide from barium carbonate-C14.

News and Notes Eighth Annual Calorimetry Conference; Symposium on the Role of Proteins in Ion Transport Across Membranes.. 710 Technical Papers One-Step Preparation of C14-Cyanide from Barium Carbonate-C14: J. K. Jeanes .719 Evaluation of Oral Temperature Readings: Francis L. Harmon.. 719 Use of the Thymus Gland in Chicks to Elucidate Interrelationships Between Pteroylglutamic Acid and Biologic...

The incorporation of formate-C14, glycine-2-C14, adenine-4, 6-C14, and phosphate-P32 into nucleic acids.

nine labeled either with C'4 or N'5. Considerable controversy has developed as to which one of these tracer compounds gives an accurate measurement of the “relativeturnover-rate― of the nucleic acids. In order to determine the “absolute turnover rate― of the nucleic acids, it is necessary to know the specific activity of the immediate precursor of the nucleic acids. Since even the ident...

C14 Assays and Autoradiographic Studies on the Rooster Comb

The distribution of C(14) was studied in various parts of the rooster comb following treatment with testosterone. The value of gas-phase assay of C(14) in tissue has been demonstrated and the results compared with those of autoradiographic studies on the same tissue. The results of these experiments showed that androgen treatment significantly increases the rate of incorporation of C(14) in var...