caffeine ring | silver US Size:7 The simplest surface with one

The simplest surface with one side and one edge

the 14 teeth of the maxillary arch arranged in their natural order

Serotonin necklace V | sterling silver

molecular biology educators teaching gene silencing

Pendant scale

caffeine ring | silver US Size:7 The simplest surface with oneCaffeine ring sterling silver If you cannot read, write, or run a clinic before your second cup, you already know what the ring carries. Caffeine, 1,3,7 trimethylxanthine, the most consumed psychoactive drug on the planet. Worn here as a sterling silver ring in US sizes 5 to 9. The Chemistry of Caffeine Caffeine is 1,3,7 trimethylxanthine, structurally one methyl group more than theobromine (3,7 dimethylxanthine). It was first isolated from coffee