U.S. Department of Health & Human Services Divider Arrow National Institutes of Health Divider Arrow NCATS

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Showing 6551 - 6560 of 6711 results

Status:
US Previously Marketed
Source:
THERUHISTIN ISOTHIPENDYL HYDROCHLORIDE by AYERST
(1961)
Source URL:
First approved in 1957
Source:
Theruhistin by Ayerst
Source URL:

Class (Stereo):
CHEMICAL (RACEMIC)


Conditions:

Isothipendyl is a first generation H1 antagonist (antihistamine) and anticholinergic used as an antipruritic. It is nowadays scarcely used in the first line relief of allergies due to the anticholinergic side effect of somnolence but does have some limited use through topical application in the relief of insect bites and related itching (pruritus).
Status:
US Previously Marketed
Source:
Veralba by Pitman-Moore (Dow Chem., USA)
(1953)
Source URL:
First approved in 1953
Source:
Veralba by Pitman-Moore (Dow Chem., USA)
Source URL:

Class (Stereo):
CHEMICAL (ABSOLUTE)


Conditions:

Protoveratrine B is one of two alkaloids isolated from the plant Veratrum albumen. The main effect of both alkaloids is vasodilation in all vascular beds thereby reducing blood pressure. In the 1950's it was recognized that Protoveratrine B is the preferred compound which can be administered at significantly higher doses before the patient begins to vomit.
Status:
US Previously Marketed
Source:
Veralba by Pitman-Moore (Dow Chem., USA)
(1953)
Source URL:
First approved in 1953
Source:
Veralba by Pitman-Moore (Dow Chem., USA)
Source URL:

Class (Stereo):
CHEMICAL (ABSOLUTE)


Conditions:

Protoveratrine B is one of two alkaloids isolated from the plant Veratrum albumen. The main effect of both alkaloids is vasodilation in all vascular beds thereby reducing blood pressure. In the 1950's it was recognized that Protoveratrine B is the preferred compound which can be administered at significantly higher doses before the patient begins to vomit.
Status:
US Previously Marketed
Source:
Veralba by Pitman-Moore (Dow Chem., USA)
(1953)
Source URL:
First approved in 1953
Source:
Veralba by Pitman-Moore (Dow Chem., USA)
Source URL:

Class (Stereo):
CHEMICAL (ABSOLUTE)


Conditions:

Protoveratrine B is one of two alkaloids isolated from the plant Veratrum albumen. The main effect of both alkaloids is vasodilation in all vascular beds thereby reducing blood pressure. In the 1950's it was recognized that Protoveratrine B is the preferred compound which can be administered at significantly higher doses before the patient begins to vomit.
Status:
US Previously Marketed
First approved in 1951

Class (Stereo):
CHEMICAL (ACHIRAL)

Zolamine is an antihistamine with local anesthetic properties. Zolamine is reported to have a low incidence of side effects and is used clinically both as an antihistaminic and a topical local anesthetic.
Status:
US Previously Marketed
Source:
Physostigmine Salicylate U.S.P.
(1921)
Source URL:
First marketed in 1921
Source:
Physostigmine Salicylate U.S.P.
Source URL:

Class (Stereo):
CHEMICAL (ABSOLUTE)


Conditions:

Physostigmine (Phy) is one of the oldest drug isolated from Calabar beans and successfully used for the treatment of glaucoma in 1864. Since then, it has been widely employed for various therapeutic purposes. Recently, it has gained prominence because of its clinical trials in the treatment of Alzheimer's disease. Physostigmine was used to treat glaucoma. It can be applied topically to the conjunctiva. Phy is also considered to be a potent prophylactic antidote for organophosphate poisoning. It is a reversible cholinesterase (ChE) inhibitor and has a short duration of action. For the last 50 years, numerous authors have shown that pretreatment with Phy would rapidly improve the incapacitating effects of organophosphate intoxication in various animal species. Phy carbamylates to a portion of ChE enzyme and thus protects the enzyme from binding with organophosphate, which are irreversible ChE inhibitors. The carbamylated ChE enzyme decarbamylates to free the enzyme for normal functioning. The rates of decarbamylation of butyrylcholinesterase (BuChE) in plasma and ChE in brain and muscle are different and are related to the half-life of Phy in these tissues. In addition to ChE inhibition, Phy has a direct action on acetylcholine (ACh) receptor ionophore complex by interacting with the ACh-gated cation channels. A cholinesterase inhibitor that is rapidly absorbed through membranes. It also can cross the blood-brain barrier and is used when central nervous system effects are desired, as in the treatment of severe anticholinergic toxicity.
Status:
US Previously Marketed
Source:
Stearic Acid U.S.P.
(1921)
Source URL:
First marketed in 1921
Source:
Stearic Acid U.S.P.
Source URL:

Class (Stereo):
CHEMICAL (ACHIRAL)



Stearic Acid is a typical example of a fatty acid, which are essentially long hydrocarbon chains containing a carboxyl group at one end and a methyl group at the other. The chain lengths can vary from 3 (propionic acid) to 24 (lignoceric acid) but the majority of fatty acids found in hydrogenated vegetable or animal oils are around C16-C20 in length. Stearic acid is a saturated acid, since there are no double bonds between neighbouring carbon atoms. Stearic acid is found in various animal and plant fats, and is a major component of cocoa butter and shea butter. Stearic acid is a very common amino acid is used in the manufacturing of more than 3,200 skin and hair care products sold in the United States. On product labels, it is sometimes listed under other names, including Century 1240, cetylacetic acid, Emersol 120, Emersol 132, Emersol 150, Formula 300 and Glycon DP. Stearic Acid is mainly used in the production of detergents, soaps, and cosmetics such as shampoos and shaving cream products. Stearic acid is used along with castor oil for preparing softeners in textile sizing. Being inexpensively available and chemically benign, stearic acid finds many niche applications It is used in the manufacture of candles, and as a hardener in candies when mixed with simple sugar and corn syrup. It is also used to produce dietary supplements. In fireworks, stearic acid is often used to coat metal powders such as aluminum and iron. This prevents oxidation, allowing compositions to be stored for a longer period of time. Stearic acid is a common lubricant during injection molding and pressing of ceramic powders. It is also used as a mold release for foam latex that is baked in stone molds. Stearic acid is known antidiabetic and antioxidant agent.
Status:
US Previously Marketed
Source:
Physostigmine Salicylate U.S.P.
(1921)
Source URL:
First marketed in 1921
Source:
Physostigmine Salicylate U.S.P.
Source URL:

Class (Stereo):
CHEMICAL (ABSOLUTE)


Conditions:

Physostigmine (Phy) is one of the oldest drug isolated from Calabar beans and successfully used for the treatment of glaucoma in 1864. Since then, it has been widely employed for various therapeutic purposes. Recently, it has gained prominence because of its clinical trials in the treatment of Alzheimer's disease. Physostigmine was used to treat glaucoma. It can be applied topically to the conjunctiva. Phy is also considered to be a potent prophylactic antidote for organophosphate poisoning. It is a reversible cholinesterase (ChE) inhibitor and has a short duration of action. For the last 50 years, numerous authors have shown that pretreatment with Phy would rapidly improve the incapacitating effects of organophosphate intoxication in various animal species. Phy carbamylates to a portion of ChE enzyme and thus protects the enzyme from binding with organophosphate, which are irreversible ChE inhibitors. The carbamylated ChE enzyme decarbamylates to free the enzyme for normal functioning. The rates of decarbamylation of butyrylcholinesterase (BuChE) in plasma and ChE in brain and muscle are different and are related to the half-life of Phy in these tissues. In addition to ChE inhibition, Phy has a direct action on acetylcholine (ACh) receptor ionophore complex by interacting with the ACh-gated cation channels. A cholinesterase inhibitor that is rapidly absorbed through membranes. It also can cross the blood-brain barrier and is used when central nervous system effects are desired, as in the treatment of severe anticholinergic toxicity.

Class (Stereo):
CHEMICAL (ABSOLUTE)

Boronophenylalanine B-10 (also known as BPA), a boron delivery agent, is used in boron-neutron capture therapy (BNCT) for metastatic melanomas and other tumors. BNCT is a therapeutic modality for malignant tumors using the nuclear capture and fission reactions that occur when boron-10 (10B) is irradiated with neutron beams. This reaction, in theory, only kills 10B-containing cells because the destructive effect of the alpha particles and lithium nuclei, which are produced by the reaction, is limited to the immediate vicinity of the reaction, approximately one cell diameter. Boronophenylalanine is localized to cells through transporter-mediated mechanisms. Aromatic amino acid transporters, ATB0,+, as well as LAT1 contribute significantly to the tumor accumulation of BPA at clinical dose.

Showing 6551 - 6560 of 6711 results