Structural formula Acrylic keychain Spinach and oxalic acid

Even if the structural formula is unfamiliar, it may actually be a substance you've heard of or are familiar with. The bitterness of spinach comes from oxalic acid. It's important to remove the bitterness! It is also said to be a cause of urinary stones. The metal part (carabiner) is carrot shaped! --- ・Lineup Carrots (carotene) Tomato (lycopene) Eggplant (anthocyanin) Spinach (oxalic acid) Apple (Malic Acid) Lemon (limonene) Coffee (caffeine) Soy milk (isoflavones) The Heart Equation Ramune (glucose) Edamame (folic acid) If the item is out of stock, we will ship it to you on a made-to-order basis. ·size Acrylic part: about 5cm (Sizes vary depending on the design) ・Metal fittings From the key holder hardware in the photo You can change the strap fittings free of charge. --- *Colors and designs may be revised with each submission. Depending on the lot, there may be slight differences from the photo. Thank you for your understanding. *Since we are not chemical experts, we may not be able to answer technical questions.