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Biguanide (/ b aɪ ˈ ɡ w ɒ n aɪ d /) is the organic compound with the formula HN(C(NH)NH 2) 2. It is a colorless solid that dissolves in water to give a highly basic solution. It is a colorless solid that dissolves in water to give a highly basic solution.
The study of poisons and toxic substances has a long history dating back to ancient times, when humans recognized the dangers posed by various natural compounds. However, the formalization and development of toxicology as a distinct scientific discipline can be attributed to notable figures like Paracelsus (1493–1541) and Orfila (1757–1853).
Phenformin is an antidiabetic drug from the biguanide class. It was marketed as DBI by Ciba-Geigy, but was withdrawn from most markets in the late 1970s due to a high risk of lactic acidosis, which was fatal in 50% of cases. Phenformin was developed in 1957 by Ungar, Freedman and Seymour Shapiro, working for the U.S. Vitamin Corporation ...
Structure of chlorhexidine, a bisbiguanide antiseptic.. Bisbiguanides are a class of chemically related compounds known for their bactericidal properties. Generally considered to be of the generic formula: R 1 R 2 N.C(:NR 6)NH.C(:NH)NH.CH 2 X--(CH 2) 3 NH.C(:NH)NH.C(:NR 7)NR 3 R 4 V. [1] These compounds include the antiseptics chlorhexidine and alexidine.
The lactic acidosis occurred only in patients with a buformin plasma level of greater than 0.60 μg/mL and was rare in patients with normal renal function. [19] [20] [21] In one report, the toxic oral dose was 329 ± 30 mg/day in 24 patients who developed lactic acidosis on buformin.
The researchers analyzed historical data on childhood blood-lead levels, leaded gas use and U.S. population statistics, determining that more than 170 million Americans had "clinically concerning ...
Health risks are usually established from toxicity studies in laboratory animals and epidemiological evidence in humans. Lead is a well studied chemical with a CDC action level of concern, currently at 10 μg/dL, or 100 parts per billion, in blood; however, neurobehavioral impairment has been noted below this level. [12]
Polyhexanide (polyhexamethylene biguanide, PHMB) is a polymer used as a disinfectant and antiseptic. In dermatological use, [ 4 ] it is spelled polihexanide ( INN ) and sold under various brand names. [ 5 ]