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C9H12NNaO2P+  , 220.16

Toldimfos sodium


Sodium (4-(dimethylamino)-2-methylphenyl)phosphinate



EINECS 209-391-4








Sodium (4-(dimethylamino)-2-methylphenyl)phosphinate



Phosphinic acid, [4-(dimethylamino)-2-methylphenyl]-, sodium salt


Phosphinic acid, (4-(dimethylamino)-2-methylphenyl)-, sodium salt

Phosphinic acid, P-(4-(dimethylamino)-2-methylphenyl)-, sodium salt (1:1)

Toldimfos is an aromatic phosphorus compound which falls between phosphorous itself and phosphoric acid in the stages of oxidation. Toldimfos sodium is the sodium salt of 2- methyl-4-(dimethylamino)phenylphosphinic acid. It is used to treat and prevent diseases associated with parturition and peri-partum period, developmental and nutritional disorders in young animals, and bone growth disorders and tetany or paresis caused by calcium, magnesium, and phosphorus metabolism disorders. Toldimfos has been used as a human medicine since 1920. While it is no longer indicated for human use, it is used in horses, cattle, sheep, pigs, and goats, and administered by intravenous, intramuscular, or subcutaneous injection. No specific data on the pharmacodynamic action of toldimfos was submitted. The precise mode of action of toldimfos is unknown and it is questionable whether the effect of toldimfos is simply a matter of the substitution of deficient phosphorus. It appears more likely that the effect of toldimfos arises due to multiple stimulation of metabolism with the body.

Toldimfos sodium trihydrate.png

Toldimfos sodium trihydrate


2D chemical structure of 57808-64-7

Toldimfos [INN:BAN]

Toldimfos Sodium

CAS Registry Number: 575-75-7

CAS Name: (4-Dimethylamino-o-tolyl)phosphonous acid sodium salt

Additional Names: sodium (4-dimethylamino-o-tolyl)phosphonate; p-dimethylamino-o-toluenephosphonous acid sodium salt

Trademarks: Foston (Hoechst); Tonofosfan (Hoechst)

Molecular Formula: C9H13NNaO2P, Molecular Weight: 221.17

Percent Composition: C 48.87%, H 5.92%, N 6.33%, Na 10.39%, O 14.47%, P 14.00%

Literature References: Prepd from N,N-dimethyl-m-toluidine and phosphorus trichloride: Benda, Schmidt, DE397813 (1924 to Cassella), Frdl.14, 1409.

Derivative Type: Trihydrate

CAS Registry Number: 5787-63-3

Properties: Scales, needles, or prisms from alc. Freely sol in cold water, hot alcohol.

Therap-Cat-Vet: Phosphorus source.




China’s animal husbandry fast development is the important motivity that promotes China’s agricultural and rural economy development, improves farmers’ income.The disease relevant with Nutrition and Metabolism of serious harm animal health is in rising trend in recent years, the direct economic loss that raising poultry nutritive metabolic disease causes over ten billion to China’s animal husbandry every year, and indirect economic loss is difficult to estimate.

Due to the life-time service of chemicals, will cause some poultrys, poultry product drug residue is serious, this is harm humans healthy not only, also affecting the export of farm produce earns foreign exchange, therefore, tackle this problem, research and development are efficient, the new Nutrition and Metabolism medicine of low toxicity, wide spectrum will have huge market.

Toldimfos (Toldimfos Sodium) belongs to the nutritional supplementation medicine of phosphorus supplement, can be used as benzenephosphonic acid (Phenylphosphinicacid, BPA) succedaneum uses, can be used for treating the disease relevant with childbirth and perinatal stage of the food animals such as horse, cattle, pig, sheep, the diseases such as the bone lengthening obstacle being caused by calcium, magnesium, phosphorus metabolism obstacle.

Toldimfos has higher water solublity, mainly excretes through urine rapidly with the former medicine form of not metabolism in animal body, and the half-life is short, can in tissue, not accumulate.

Toldimfos is developed by German Hoechst company, the symptom such as since nineteen twenty, once physical weakness, chronic stress, depression, mental muscle power postoperative for human treatment, that catch was overtired.Now be not used in the mankind, be mainly used in animal.Its commodity are called onofosfan.

In sum, toldimfos, as a kind of nutritional supplementation medicine of new and effective noresidue, has wide market prospect in China.The development of this product will be made outstanding contributions to the sound development of China’s animal husbandry, remarkable economic and social benefits with application.



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//////////TOLDIMFOS SODIUM, HOECHST,  Foston, Tonofosfan, 





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DR ANTHONY MELVIN CRASTO, Born in Mumbai in 1964 and graduated from Mumbai University, Completed his Ph.D from ICT, 1991,Matunga, Mumbai, India, in Organic Chemistry, The thesis topic was Synthesis of Novel Pyrethroid Analogues, Currently he is working with AFRICURE PHARMA as ADVISOR, earlier assignment was with GLENMARK LIFE SCIENCES LTD, as CONSUlTANT, Retired from GLENMARK in Jan2022 Research Centre as Principal Scientist, Process Research (bulk actives) at Mahape, Navi Mumbai, India. Total Industry exp 32 plus yrs, Prior to joining Glenmark, he has worked with major multinationals like Hoechst Marion Roussel, now Sanofi, Searle India Ltd, now RPG lifesciences, etc. He has worked with notable scientists like Dr K Nagarajan, Dr Ralph Stapel, Prof S Seshadri, etc, He did custom synthesis for major multinationals in his career like BASF, Novartis, Sanofi, etc., He has worked in Discovery, Natural products, Bulk drugs, Generics, Intermediates, Fine chemicals, Neutraceuticals, GMP, Scaleups, etc, he is now helping millions, has 9 million plus hits on Google on all Organic chemistry websites. His friends call him Open superstar worlddrugtracker. His New Drug Approvals, Green Chemistry International, All about drugs, Eurekamoments, Organic spectroscopy international, etc in organic chemistry are some most read blogs He has hands on experience in initiation and developing novel routes for drug molecules and implementation them on commercial scale over a 32 PLUS year tenure till date Feb 2023, Around 35 plus products in his career. He has good knowledge of IPM, GMP, Regulatory aspects, he has several International patents published worldwide . He has good proficiency in Technology transfer, Spectroscopy, Stereochemistry, Synthesis, Polymorphism etc., He suffered a paralytic stroke/ Acute Transverse mylitis in Dec 2007 and is 90 %Paralysed, He is bound to a wheelchair, this seems to have injected feul in him to help chemists all around the world, he is more active than before and is pushing boundaries, He has 100 million plus hits on Google, 2.5 lakh plus connections on all networking sites, 100 Lakh plus views on dozen plus blogs, 227 countries, 7 continents, He makes himself available to all, contact him on +91 9323115463, email, Twitter, @amcrasto , He lives and will die for his family, 90% paralysis cannot kill his soul., Notably he has 38 lakh plus views on New Drug Approvals Blog in 227 countries...... , He appreciates the help he gets from one and all, Friends, Family, Glenmark, Readers, Wellwishers, Doctors, Drug authorities, His Contacts, Physiotherapist, etc He has total of 32 International and Indian awards

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