Common Vitamins and Their Scientific Name: 1. Vitamin A – Retinol 2. Vitamin B1 – Thiamine 3. Vitamin B2 – Riboflavin 4. Vitamin B3 – Niacin (Nicotinic Acid) 5. Vitamin B5 – Pantothenic Acid 6. Vitamin B6 – Pyridoxine 7. Vitamin B7 – Biotin 8. Vitamin B9 – Folic Acid (Folate) 9. Vitamin B12 – Cobalamin 10. Vitamin C – Ascorbic Acid 11. Vitamin D – Cholecalciferol (Vitamin D3) / Ergocalciferol (Vitamin D2) 12. Vitamin E – Tocopherol 13. Vitamin K – Phylloquinone (Vitamin K1) / Menaquinone (Vitamin K2)