Phenothiazine S,S-Dioxide 1g
https://www.manchesterbeacon.org/shop/rw2-trc-p297600-1g-phenothiazine-s-s-dioxide-1g-280761
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This Phenothiazine is guaranteed with the use of S,S-Dioxide and directly supplied F2 to your lab by Gentaur's warehouse.
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30-day money-back guarantee
Shipping: 2-3 Business Days