DL Norgestrel
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  DL Norgestrel



DL Norgestrel

   A synthetic progestational agent with actions similar to those of PROGESTERONE. This racemic or (+-)-form has about half the potency of the levo form (LEVONORGESTREL). Norgestrel is used as a contraceptive,ovulation inhibitor, and for the control of menstrual disorders and endometriosis.

RELATED TERMS
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PROGESTERONE
A hormone produced in response to luteinizing hormone (LH) released from the pituitary gland. It is required to flush out the uterus if an egg is not fertilized. It is also useful for stimulating the growth of new bone mass.

Inhibitor
A substance that is added to another to prevent or slow down an unwanted reaction or change.

Menstrual
An endocrine cycle of 28 days in women which includes fluctuations in estrogen and progesterone, the events of enodmetrial development, follicular maturation, ovulation, changes in cervical mucus secretion, breast vascularization changes, and if pregnancy does not occur, menstruation.

Endometriosis
A condition in which tissue more or less perfectly resembling the uterine mucous membrane (the endometrium) and containing typical endometrial granular and stromal elements occurs aberrantly in various locations in the pelvic cavity.



SIMILAR TERMS
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PREVIOUS AND NEXT TERMS
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Dl-APV
The D-enantiomer is a potent and specific antagonist of NMDA glutamate receptors (RECEPTORS, N-METHYL-D-ASPARTATE). The L form is inactive at NMDA receptors but may affect the AP4 (2-amino-4-phosphonobutyrate; APB) excitatory amino acid receptors.

DL-alpha-Difluoromethylornithine
An inhibitor of ornithine decarboxylase, the rate limiting enzyme of the polyamine biosynthetic pathway.

DL-3-(4-Chlorophenyl)alanine
A selective and irreversible inhibitor of tryptophan hydroxylase, a rate-limiting enzyme in the biosynthesis of serotonin (5-HYDROXYTRYPTAMINE). Fenclonine acts pharmacologically to deplete endogenous levels of serotonin.

DL-8280
A synthetic fluoroquinolone (FLUOROQUINOLONES) antibacterial agent that inhibits the supercoiling activity of bacterial DNA gyrase, halting DNA replication.

DL Tyrosine, alpha methyl
An inhibitor of the enzyme TYROSINE 3-MONOOXYGENASE, and consequently of the synthesis of catecholamines. It is used to control the symptoms of excessive sympathetic stimulation in patients with PHEOCHROMOCYTOMA. (Martindale, The Extra Pharmacopoeia, 30th ed)

DL Norgestrel

Dizygotic Twin
Two offspring produced in the same pregnancy from separate ova fertilized at the same time.

Dizocilpine Maleate
A potent noncompetitive antagonist of the NMDA receptor (RECEPTORS, N-METHYL-D-ASPARTATE) used mainly as a research tool. The drug has been considered for the wide variety of neurodegenerative conditions or disorders in which NMDA receptors may play an important role. Its use has been primarily limited to animal and tissue experiments because of its psychotropic effects.

Dizocilpine
A potent noncompetitive antagonist of the NMDA receptor (RECEPTORS, N-METHYL-D-ASPARTATE) used mainly as a research tool. The drug has been considered for the wide variety of neurodegenerative conditions or disorders in which NMDA receptors may play an important role. Its use has been primarily limited to animal and tissue experiments because of its psychotropic effects.

Dizenedicarboxylic Acid Bis(N,N-dimethylamide)
A sulfhydryl reagent which oxidizes sulfhydryl groups to the disulfide form. It is a radiation-sensitizing agent of anoxic bacterial and mammalian cells.

Dizene Dicarboxylic Acid Bis(N,N-dimethylamide)
A sulfhydryl reagent which oxidizes sulfhydryl groups to the disulfide form. It is a radiation-sensitizing agent of anoxic bacterial and mammalian cells.

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