On January 8, 2014, Liu, Guilan; Liu, Tuo; Xie, Lingling published a patent.Product Details of 23256-42-0 The title of the patent was Method for preparing soluble powder of sulfanilamide salt and trimethoprim. And the patent contained the following:
The invention relates to method for preparing sulfanilamide salt and trimethoprim soluble powder. The sulfanilamide salt and trimethoprim soluble powder contains sulfanilamide salt 5∼50%, trimethoprim lactate 1∼10, coated dispersant 10∼25% and alk. excipient added to 100%. The preparation method comprises (1) weighing coated dispersant, adding trimethoprim lactate, stirring to mix well to obtain mixture A; and (2) adding sulfanilamide salt to mixture A, adding alk. excipient to 100%, stirring to obtain sulfanilamide salt and trimethoprim soluble powder. Special processing of sulfanilamide salt and trimethoprim can make sulfanilamide salt alk. drug and trimethoprim acidic drug simultaneously disperse uniformly in water, not precipitate within 2 h, and have stable content of active components. The invention is convenient for animal use, has good curative effect, safe and reliable property, good stability, no adverse reaction, compared with premix it has remarkable application advantage. The experimental process involved the reaction of 5-(3,4,5-Trimethoxybenzyl)pyrimidine-2,4-diamine 2-hydroxypropanoate(cas: 23256-42-0).Product Details of 23256-42-0
The Article related to sulfanilamide trimethoprim soluble powder veterinary antibiotic, Pharmaceuticals: Formulation and Compounding and other aspects.Product Details of 23256-42-0
Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia