Tetrahydro-D-biopterin Sulfate (Mixture of Diastereomers) 50mg
https://www.genesapiens.org/shop/rw2-trc-h353330-50mg-tetrahydro-d-biopterin-sulfate-mixture-of-diastereomers-50mg-295044
https://www.genesapiens.org/web/image/product.template/295044/image_1920?unique=c11f178
This Tetrahydro-D-biopterin is guaranteed a Sulfate with the use of (Mixture of and directly supplied to your lab by Gentaur's warehouse.
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