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

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Showing 491 - 500 of 21518 results

A sulfide ion is composed of a lone sulfur atom. Its charge is negative two, giving sulfides this formula: S^2-. Sulfide is a strong base, so solutions of sulfide in water are basic, due to hydrolysis. One well-known ionic compound with a sulfide ion is H_2S. The infamous rotten-egg smell often associated with sulfur originates from this compound. Sodium sulfide nonahydrate is used in the formation of surface functionalized cadmium sulfide quantum dots.
Status:
US Approved OTC
Source:
21 CFR 341.16(g) cough/cold:bronchodilator racepinephrine hydrochloride
Source URL:

Class (Stereo):
CHEMICAL (RACEMIC)



Racepinephrine or racemic epinephrine is a mixture of levo and dextro isomers of epinephrine act as a nonselective agonist at adrenergic receptors. It is a bronchodilator used in the temporary relief of mild symptoms of intermittent asthma including wheezing, shortness of breath. Inhaled racepinephrine became available in September 2012 as a nonprescription treatment for bronchospasm based on a 1986 US Food and Drug Administration rule. Besides, racemic epinephrine relieves respiratory distress in hospitalized infants with bronchiolitis and is safe but does not abbreviate hospital stay. Morbidity associated with bronchiolitis as identified by parents persists for at least one week after hospital discharge in most infants.
Status:
US Approved OTC
Source:
21 CFR 333.210(g) antifungal clotrimazole
Source URL:
First approved in 1975

Class (Stereo):
CHEMICAL (ACHIRAL)



Clotrimazole is an anti-fungal medicine indicated for the treatment of vaginal yeast infections and tinea. It can be used either in combination with other drugs (betamethasone dipropionate) or alone, in form of topical or vaginal cream. The drug exerts its action by inhibiting lanosterol demethylase thereby affecting the growth of fungi.
Status:
US Approved OTC
Source:
21 CFR 341.20(b)(7) cough/cold:nasal decongestant oxymetazoline hydrochloride
Source URL:
First approved in 1964
Source:
Afrin by Schering
Source URL:

Class (Stereo):
CHEMICAL (ACHIRAL)



Oxymetazoline is an adrenergic alpha-agonist, direct acting sympathomimetic, used as a vasoconstrictor to relieve nasal congestion The sympathomimetic action of oxymetazoline constricts the smaller arterioles of the nasal passages, producing a prolonged (up to 12 hours), gentle and decongesting effect. Oxymetazoline elicits relief of conjunctival hyperemia by causing vasoconstriction of superficial conjunctival blood vessels. The drug's action has been demonstrated in acute allergic conjunctivitis and in chemical (chloride) conjunctivitis. Oxymetazoline is self-medication for temporary relief of nasal congestion associated with the common cold, hay fever, or other upper respiratory allergies. Oxymetazoline is available over-the-counter as a topical decongestant in the form of oxymetazoline hydrochloride in nasal sprays such as Afrin, Operil, Dristan, Dimetapp, oxyspray, Facimin, Nasivin, Nostrilla, Sudafed OM, Vicks Sinex, Zicam, SinuFrin, and Mucinex Full Force. Due to its vasoconstricting properties, oxymetazoline is also used to treat nose bleeds and eye redness.
Status:
US Approved OTC
Source:
21 CFR 350.10(o) antiperspirant aluminum zirconium tetrachlorohydrate
Source URL:
First approved in 1963
Source:
Speed Stick by Mennen
Source URL:

Class (Stereo):
CHEMICAL (ACHIRAL)

Zirconium Fluoride is a water insoluble Zirconium source for use in oxygen-sensitive applications, such as metal production. Zirconium fluoride in a mixture with other fluorides is a coolant for molten salt reactors. In the mixture with sodium fluoride it is a candidate coolant for the Advanced High-Temperature Reactor.
Status:
US Approved OTC
Source:
21 CFR 341.16(f) cough/cold:bronchodilator racephedrine hydrochloride
Source URL:
First approved in 1961
Source:
CHOLARACE RACEPHEDRINE HYDROCHLORIDE by WC
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Class (Stereo):
CHEMICAL (RACEMIC)

Conditions:

Racephedrine in combination with theophylline, phenobarbital was used to treat bronchial asthma. However, its application was substituted more effective agent. In addition, FDA has reviewed the final monograph for over-the-counter bronchodilator drug products to add additional warnings and to revise the indications in the labeling of products containing racephedrine hydrochloride.
Status:
US Approved OTC
Source:
21 CFR 347.10(a) skin protectant allantoin
Source URL:
First approved in 1961
Source:
ALLANTOMIDE ALLANTOIN by NATIONAL DRUG
Source URL:

Class (Stereo):
CHEMICAL (RACEMIC)



The aluminum salt of Allantoin, Alcloxa combines the astringent and anti-microbial properties of aluminum with the anti-irritant, soothing and healing properties of Allantoin. Alcloxa is particularly suited for use in anti-perspirants, acne treatments and foot care products. Alcloxa is a compound that combine the properties of aluminum salts with the properties of allantion. The allantion component ehhances the action of the aluminum salts and serves to overcome irritations experienced by many individuals who may be sensitive to the use of aluminum alts. The aluminum component reduces sweat by causing the sweat gland ducts swell. Alcloxa also add to the antiperspirant properties the deodorant effect because of its bacteriostatic action. It showed bacteriostatic properties at concentrations of 0.2% particularly against Gram bectaria (B. subtilis, S. aureus, P. vulgaris, Pityrosporum ovale). This is ascribable to two different mechanisms: first bacterial growth is retarded due to a decrease in the amount of water present, second aluminum salt have itself an antimicrobial action. In baby products is indicated for its healing reparative action, in the treatment of diaper rash. Also is approved in haemorrhoidal product for its soothing and keratolytic action. In oral care products Alcloxa is useful for its astringent antibacterial properties. It is very indicated in formulations for sensitive teeth, periodontal and gum diseases (like gingivitis, irritable and bleeding gums). Use levels: 0.1-1%. − In antiacne products the slightly astringent effect promotes healing of pustules and acne lesions. It reduces the extension of infected skin eruptions, healing them and developing a soothing action. May be used alone or also in combinations with other antimicrobial agents in order to fight acne more effectively. Use levels: 0.5-2.0%.
Status:
US Approved OTC
Source:
21 CFR 358.710(a)(2) dandruff:dandruff (wash-off) pyrithione zinc
Source URL:
First approved in 1961
Source:
Head & Shoulders Shampoo by Proctor and Gamble
Source URL:

Class (Stereo):
CHEMICAL (ACHIRAL)



Pyrithione zinc is an antibacterial and antifungal agent developed by scientists in the 1930's. Since then it has been used to treat seborrheic dermatitis of the scalp and other skin conditions such as eczema, athlete's foot, and vitiligo, as well as psoriasis. Because of its antifungal properties, it is commonly found in dandruff shampoo. Products containing pyrithione zinc are available today with and without prescription, and it is the main ingredient in many over-the-counter creams, lotions, soaps, and shampoos. It also has antibacterial properties and is effective against many pathogens from the Streptococcus and Staphylococcus genera. Pyrithione zinc`s other medical applications include treatments of psoriasis, eczema, ringworm, fungus, athletes foot, dry skin, atopic dermatitis, tinea, and vitiligo. Its antifungal effect is thought to derive from its ability to disrupt membrane transport by blocking the proton pump that energizes the transport mechanism.
Status:
US Approved OTC
Source:
21 CFR 341.20(a)(2) cough/cold:nasal decongestant pseudoephedrine hydrochloride
Source URL:
First approved in 1961

Class (Stereo):
CHEMICAL (ABSOLUTE)



Pseudoephedrine is a sympathomimetic drug. Pseudoephedrine acts as an adrenomimetic and inhibitor of monoamine transporters. Ephedra sinica, a species of ephedra (ma huang), contains ephedrine and pseudoephedrine. Ephedra has been found to stimulate the nervous system, increase airflow into the lungs and constrict blood vessels. In combination with caffeine, ephedra appears to cause weight loss. Pseudoephedrine is a decongestant that shrinks blood vessels in the nasal passages. Pseudoephedrine is used to relieve nasal or sinus congestion caused by the common cold, sinusitis, and hay fever and other respiratory allergies.
Status:
US Approved OTC
Source:
21 CFR 341.14(a)(1) cough/cold:antitussive chlophedianol hydrochloride
Source URL:
First approved in 1960
Source:
Ulo by Riker
Source URL:

Class (Stereo):
CHEMICAL (RACEMIC)

Conditions:

Chlophedianol (Clofedanol) is a centrally-acting cough suppressant, although the mechanism of action is not known. It is available in Canada under the trade name Ulone. It is not available in the United States. Chlophedianol (Clofedanol) suppresses the cough reflex by a direct effect on the cough center in the medulla of the brain. It also has local anesthetic and antihistamine properties, and may have anticholinergic effects at high doses.