The preparation of ring-labelled tritiated nictinic acid by exchange in concentrated sulphuric acid.
D009525:Niacin; D009539:Nicotinic Acids; D019736:Prostheses and Implants; D013464:Sulfuric Acids
D009539:Nicotinic Acids; D013464:Sulfuric Acids; D009525:Niacin; C033158:sulfuric acid
NICOTINIC ACID; SULFURIC ACID