Why is vitamin C called ascorbic acid, when there is no carboxyl group present in its structure? - Quora
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Stability issues with L-ascorbic acid have given rise to the synthesis of various vitamin C derivatives with comparable effects. | Cosmetics & Toiletries
What Is Ascorbic Acid (Vitamin C) Used For? - Ingredi
Ascorbic acid - American Chemical Society
Vitamin C - Wikipedia
FAQ: Are Vitamin C and Ascorbic Acid the Same Thing?