Chlorothiophene carboxylic acid (25 mg) (5-chlorothiophene-2-carboxylic acid),
https://www.manchesterbeacon.org/shop/rw2-1a01180-chlorothiophene-carboxylic-acid-25-mg-5-chlorothiophene-2-carboxylic-acid-303278
https://www.manchesterbeacon.org/web/image/product.template/303278/image_1920?unique=4e35d75
This Chlorothiophene is guaranteed a carboxylic with the use of acid acid), and directly supplied to your lab by Gentaur's warehouse.
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