11. Townsend, C. A.; Theis, A. B. “A Method for the Transfer of Labeled Methyl Groups,” J. Org. Chem. 1980, 45, 1697–1699.

10. Imfeld, M.; Townsend, C. A.; Arigoni, D. “Intact Transfer of Methyl Groups in the Biosynthesis of Vitamin B12,” J. Chem. Soc., Chem. Commun. 1976, 541–542.

9. Townsend, C. A.; Scholl, T.; Arigoni, D. “A New Synthesis of Chiral Acetic Acid,” J. Chem. Soc., Chem. Commun. 1975, 921–922.

8. Scott, A. I.; Georgopapadakou, N.; Ho, K. S.; Klioze, S.; Lee, E.; Lee, S. L.; Temme, G. H. III; Townsend, C. A.; Armitage, I. M. “Concerning the Intermediacy of Uro’gen III and of a Heptacarboxylic Uro’gen in Corrinoid Biosynthesis,” J. Am. Chem. Soc. 1975, 97, 2548–4550.

7. Scott, A. I.; Townsend, C. A.; Okada, K.; Kajiwara, M.; Cushley, R. J.; Whitman, P. J. “Biosynthesis of Corrins II. Incorporation of 13C-Labeled Substrates into Vitamin B12,” J. Am. Chem. Soc. 1974, 96, 8069–8080.

6. Scott, A. I.; Townsend, C. A.; Okada, K.; Kajiwara, M. “Biosynthesis of Corrins I. Experiments with ¹⁴C-Porphobilinogen and ¹⁴C-Uroporphyrinogens,” J. Am. Chem. Soc. 1974, 96, 8054–8069.

5. Scott, A. I.; Lee, E.; Townsend, C. A. “On Corrin Biosynthesis,” Bioorg. Chem. 1973, 3, 229–237.

4. Scott, A. I.; Townsend, C. A.; Cushley, R. J. “Stereochemistry of Methyl Group Insertion in Corrinoid Biosynthesis. Determination of Carbon Isotope Chirality by 13C Nuclear Magnetic Resonance,” J. Am. Chem. Soc. 1973, 95, 5759–5761.

3. Scott, A. I.; Townsend, C. A.; Okada, K.; Kajiwara, M. “Concerning the Biosynthesis of Vitamin B12,” Trans. N.Y. Acad. Sci., Series II 1973, 35, 72–79.

2. Scott, A. I.; Townsend, C. A.; Okada, K.; Kajiwara, M.; Cushley, R. J. “Uroporphyrinogen III as a Precursor of Vitamin B12,” J. Am. Chem. Soc.1972, 94, 8269–8271.

1. Scott, A. I.; Townsend, C. A.; Okada, K.; Kajiwara, M.; Whitman, P. J.; Cushley, R. J. “Biosynthesis of Corrinoids. Concerning the Origin of the Methyl Groups in Vitamin B12,” J. Am. Chem. Soc. 1972, 98, 8267–8269.