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Tolmetin

Tolmetin structure

Tolmetin 

structure
  • CAS No:

    26171-23-3

  • Formula:

    C15H15NO3

  • Chemical Name:

    Tolmetin

  • Synonyms:

    1H-Pyrrole-2-acetic acid,1-methyl-5-(4-methylbenzoyl)-;Pyrrole-2-acetic acid,1-methyl-5-p-toluoyl-;1-Methyl-5-(4-methylbenzoyl)-1H-pyrrole-2-acetic acid;Tolmetin;1-Methyl-5-p-toluoylpyrrole-2-acetic acid;McN 2559;5-[(p-Tolyl)carbonyl]-1-methylpyrrole-2-acetic acid;Tolmetine;2-[1-Methyl-5-(4-methylbenzoyl)-1H-pyrrol-2-yl]acetic acid;87344-04-5

  • Categories:

    Pharmaceutical Intermediates  >  Bulk Drug Intermediates

Description

ChEBI: A monocarboxylic acid that is (1-methylpyrrol-2-yl)acetic acid substituted at position 5 on the pyrrole ring by a 4-methylbenzoyl group. Used in the form of its sodium salt dihydrate as a nonselective nonsteroidal anti-inflammatory drug.


Solid


Tolmetin is a monocarboxylic acid that is (1-methylpyrrol-2-yl)acetic acid substituted at position 5 on the pyrrole ring by a 4-methylbenzoyl group. Used in the form of its sodium salt dihydrate as a nonselective nonsteroidal anti-inflammatory drug. It has a role as a non-steroidal anti-inflammatory drug and an EC 1.14.99.1 (prostaglandin-endoperoxide synthase) inhibitor. It is a member of pyrroles, a monocarboxylic acid and an aromatic ketone. It is a conjugate acid of a tolmetin(1-).|A non-steroidal anti-inflammatory agent (anti-inflammatory agents, NON-steroidal) similar in mode of action to indomethacin.|Tolmetin is a Nonsteroidal Anti-inflammatory Drug. The mechanism of action of tolmetin is as a Cyclooxygenase Inhibitor.|Tolmetin is a nonsteroidal antiinflammatory drug (NSAID) that is available by prescription only and used for therapy of chronic arthritis. Tolmetin is associated with low rates of serum aminotransferase elevations during therapy and has been linked to rare instances of clinically apparent drug induced liver injury.|Tolmetin is an arylalkanoic acid and non-steroidal anti-inflammatory drug (NSAID) with analgesic, anti-inflammatory and antipyretic activities. Although the exact mechanism through which tolmetin exerts its effects has yet to be fully elucidated, this agent appears to inhibit the enzyme prostaglandin synthase. This prevents the formation of prostaglandins from prostaglandin precursors, including the synthesis of the inflammatory prostaglandin E2 (PGE2) from the precursor prostaglandin H2 (PGH2). This prevents prostaglandin-mediated effects, including pain, inflammation and fever.|A non-steroidal anti-inflammatory agent (ANTI-INFLAMMATORY AGENTS, NON-STEROIDAL) similar in mode of action to INDOMETHACIN.

Tolmetin Basic Attributes

257.289

257.28

247-497-2

D8K2JPN18B

DTXSID2043951

C29503

CRYSTALS FROM ACETONITRILE

M - Musculo-skeletal system

2933990090

Characteristics

59.3

2.8

Solid

1.2±0.1 g/cm3

155-157 °C (decomp)

483.2°C at 760 mmHg

246.0±27.3 °C

1.582

222 mg/L

Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.

7.77E-10mmHg at 25°C

3.5None

3.5

156.7 Ų [M+H]+ [CCS Type: TW]

PYRROLE-ACETIC ACID DERIVATIVE /TOLMETIN SODIUM/

Safety Information

REVIEW ARTICLE INCLUDES TOLMETIN.[SIMON LS, MILLS JA; NONSTEROIDAL ANTIINFLAMMATORY DRUGS (SECOND OF TWO PARTS); N ENGL J MED 302 (22) 1237 (1980)]|TOLMETIN'S PHARMACOLOGICAL PROPERTIES & THERAPEUTIC EFFICACY IN RHEUMATIC DISEASES ARE REVIEWED.[BROGDEN RN ET AL; TOLMETIN: A REVIEW OF ITS PHARMACOLOGICAL PROPERTIES & THERAPEUTIC EFFICACY IN RHEUMATIC DISEASES; DRUGS 15(6) 429 (1978)]|THE HISTORY OF RESEARCH & DEVELOPMENT OF NONSTEROIDAL ANTI-INFLAMMATORY AGENTS, INCL TOLMETIN.[GRINGAUZ A; NONSTEROIDAL ANTI-INFLAMMATORY AGENTS--ANYTHING NEW UNDER THE SUN?; HOSP FORMUL 14(MAR) 290 (1979)]

|Warning|H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]|P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P340, P305+P351+P338, P312, P321, P330, P332+P313, P337+P313, P362, P403+P233, P405, and P501|The GHS information provided by 1 company from 1 notification to the ECHA C&L Inventory.

Toxicity

Symptoms of overdose include lethargy, drowsiness, nausea, vomiting, and epigastric pain.

Up to 5% of patients taking tolmetin chronically experience at least transient serum aminotransferase elevations. These may resolve even with drug continuation. Marked aminotransferase elevations (>3 fold elevated) occur in

PT RECEIVING CORTICOSTEROID OR GOLD THERAPY OBTAINED GREATER RELIEF OF SYMPTOMS WHEN TOLMETIN WAS ADDED TO THE REGIMEN, & THERE WAS EVIDENCE THAT TOLMETIN HAD A STEROID-SPARING EFFECT. /TOLMETIN SODIUM/|CONCOMITANT ADMIN OF TOLMETIN & ACETAMINOPHEN PRODUCED A GREATER IMPROVEMENT IN SYMPTOMS THAN WITH TOLMETIN ALONE, BUT FURTHER STUDIES ARE NEEDED TO SUBSTANTIATE THIS EFFECT. /TOLMETIN SODIUM/|CONCOMITANT ASPIRIN REDUCES PLASMA LEVELS OF TOLMETIN BY ABOUT 20%, BUT THE INTERACTION PROBABLY IS NOT CLINICALLY IMPORTANT. /TOLMETIN SODIUM/|IN DOGS, PROSTAGLANDIN SYNTHETASE INHIBITORS INDOMETHACIN & TOLMETIN BLOCKED FUROSEMIDE-INDUCED INCR IN RENIN SECRETION WHETHER FUROSEMIDE WAS GIVEN IV OR INTO RENAL ARTERY.|DESPITE ITS EXTENSIVE BINDING TO ALBUMIN...NO CHANGE IN PROTHROMBIN TIME WHEN WARFARIN & TOLMETIN WERE GIVEN TOGETHER.

Drug Information

For the relief of signs and symptoms of rheumatoid arthritis and osteoarthritis, including the treatment of acute flares long-term management. Also for treatment of juvenile rheumatoid arthritis.|FDA Label

Tolmetin is a nonsteroidal antiinflammatory drug (NSAID) that is available by prescription only and used for therapy of chronic arthritis. Tolmetin is associated with low rates of serum aminotransferase elevations during therapy and has been linked to rare instances of clinically apparent drug induced liver injury.

Nonsteroidal Antiinflammatory Drugs

Anti-Inflammatory Agents, Non-Steroidal; Cyclooxygenase Inhibitors|IN SEVERAL CONTROLLED STUDIES IN PT WITH RHEUMATOID ARTHRITIS, TOLMETIN REDUCED SEVERITY OF SYMPTOMS (...JOINT SWELLING, PAIN, NUMBER OF INFLAMED JOINTS, DURATION OF MORNING STIFFNESS). ITS EFFECTIVENESS WAS MAINTAINED WITH LONG-TERM USE (TWO YEARS). /TOLMETIN SODIUM/|EFFICACY...IN A DAILY DOSE OF ABOUT 1.2 G WAS COMPARABLE TO...3.9 G OF ASPIRIN DAILY. /OTHER/...STUDIES IN PT WITH RHEUMATOID ARTHRITIS INDICATED...DAILY DOSE OF ABOUT 1.2 G OF TOLMETIN WAS EQUALLY EFFECTIVE TO ABOUT 150 MG INDOMETHACIN. ...SIMILAR EFFECTIVENESS /COMPARED TO/ IBUPROFEN & PHENYLBUTAZONE. /TOLMETIN SODIUM/|...SHOWN TO BE EFFECTIVE IN TREATMENT OF JUVENILE RHEUMATOID ARTHRITIS; HOWEVER, THE NUMBER OF PT STUDIED WAS SMALL & ADDNL STUDIES ARE NECESSARY TO ESTABLISH THE EFFECTIVE DOSE. /TOLMETIN SODIUM/|For more Therapeutic Uses (Complete) data for TOLMETIN (14 total), please visit the HSDB record page.

IN CLINICAL STUDIES, PEPTIC ULCER OCCURRED IN APPROX 2% OF PT. IT IS... ADVISABLE TO USE TOLMETIN CAUTIOUSLY IN PT WITH A HISTORY OF PEPTIC ULCER. /TOLMETIN SODIUM/|TOLMETIN DECR PLATELET ADHESIVENESS & INCR BLEEDING TIME; THUS, IT SHOULD NOT BE USED IN PT WITH BLEEDING DISORDERS. /TOLMETIN SODIUM/|TOLMETIN...COMMONLY PRODUCES GASTROINTESTINAL REACTIONS (25% OF RECIPIENTS), & THEY RANGE FROM TRANSIENT MILD EFFECTS, SUCH AS NAUSEA, TO SERIOUS REACTIONS REQUIRING CESSATION OF THERAPY. ... URTICARIA, HEADACHE, WATER RETENTION, DIZZINESS, & HYPERTENSION HAVE ALSO BEEN REPORTED. /TOLMETIN SODIUM/|TOLMETIN CAUSES PSEUDOPROTEINURIA IN TESTS INVOLVING ACID PPT; THUS, OTHER METHODS FOR DETECTING PROTEINURIA SHOULD BE USED FOR PT RECEIVING THIS DRUG. /TOLMETIN SODIUM/|For more Drug Warnings (Complete) data for TOLMETIN (8 total), please visit the HSDB record page.

Tolmetin is a nonsteroidal anti-inflammatory agent. Studies in animals have shown tolmetin to possess anti-inflammatory, analgesic and antipyretic activity. In the rat, tolmetin prevents the development of experimentally induced polyarthritis and also decreases established inflammation. In patients with either rheumatoid arthritis or osteaoarthritis, tolmetin is as effective as aspirin and indomethacin in controlling disease activity, but the frequency of the milder gastrointestinal adverse effects and tinnitus was less than in aspirin-treated patients, and the incidence of central nervous system adverse effects was less than in indomethacin-treated patients. In patients with juvenile rheumatoid arthritis, tolmetin is as effective as aspirin in controlling disease activity, with a similar incidence of adverse reactions. tolmetin has produced additional therapeutic benefit when added to a regimen of gold salts and, to a lesser extent, with corticosteroids. Tolmetin should not be used in conjunction with salicylates since greater benefit from the combination is not likely, but the potential for adverse reactions is increased.

Compounds or agents that combine with cyclooxygenase (PROSTAGLANDIN-ENDOPEROXIDE SYNTHASES) and thereby prevent its substrate-enzyme combination with arachidonic acid and the formation of eicosanoids, prostaglandins, and thromboxanes. (See all compounds classified as Cyclooxygenase Inhibitors.)|Anti-inflammatory agents that are non-steroidal in nature. In addition to anti-inflammatory actions, they have analgesic, antipyretic, and platelet-inhibitory actions.They act by blocking the synthesis of prostaglandins by inhibiting cyclooxygenase, which converts arachidonic acid to cyclic endoperoxides, precursors of prostaglandins. Inhibition of prostaglandin synthesis accounts for their analgesic, antipyretic, and platelet-inhibitory actions; other mechanisms may contribute to their anti-inflammatory effects. (See all compounds classified as Anti-Inflammatory Agents, Non-Steroidal.)

Rapidly and almost completely absorbed with peak plasma levels being reached within 30-60 minutes after an oral therapeutic dose.|THE DRUG IS RAPIDLY ABSORBED AFTER ORAL ADMIN, PEAK PLASMA LEVELS OCCUR IN 30 TO 60 MIN. IT IS EXCRETED LARGELY IN URINE, PRIMARILY AS CONJUGATES OR METABOLITES. ITS PLASMA HALF-LIFE IS APPROX 1 HR. /TOLMETIN SODIUM/|GI ABSORPTION IS ABOUT 90% OR GREATER...WITH PEAK LEVELS WITHIN 20-60 MIN FOR TOLMETIN... PROTEIN BINDING IS EXTENSIVE, BEING 90% OR GREATER... HEPATIC BIOTRANSFORMATION & RENAL EXCRETION WITH SOME FECAL EXCRETION OF METABOLITES ARE THE MEANS OF ELIMINATION. /TOLMETIN SODIUM/|TOLMETIN IS RAPIDLY & COMPLETELY ABSORBED FOLLOWING ORAL ADMIN TO MAN, & CONCN ACHIEVED IN PLASMA ARE NOT REDUCED BY CONCOMITANT ADMIN OF GASTRIC ANTACIDS. PEAK CONCN ARE ACHIEVED 20-60 MIN AFTER ORAL ADMIN, & T/2 IN PLASMA IS BETWEEN 1 & 3 HR.|AFTER ABSORPTION, TOLMETIN IS EXTENSIVELY (99%) BOUND TO PLASMA PROTEINS. VIRTUALLY ALL OF THE DRUG CAN BE RECOVERED IN URINE AFTER 24 HR; SOME IS UNCHANGED (17%), BUT MOST IS CONJUGATED (10%) OR OTHERWISE METABOLIZED. THE MAJOR METABOLITE TRANSFORMATION IS DECARBOXYLATION.|TOLMETIN SODIUM WAS RAPIDLY & COMPLETELY ABSORBED (PEAK TIME, 20-60 MIN) & ELIMINATED RAPIDLY FROM PLASMA WITH BIPHASIC DECAY CURVE & ELIMINATION T/2 OF APPROX 2.1 HR.

Essentially all of the administered dose is recovered in the urine in 24 hours either as an inactive oxidative metabolite or as conjugates of tolmetin.|URINE METABOLITES 1-METHYL-5-(4-CARBOXYBENZOYL)-1H-PYRROLE-2-ACETIC ACID & TOLMETIN GLUCURONIDE NOTED AFTER TOLMETIN SODIUM.|Tolmetin has known human metabolites that include Tolmetin glucuronide.

Biphasic elimination from the plasma consisting of a rapid phase with a half-life of one to 2 hours followed by a slower phase with a half-life of about 5 hours.

The mode of action of tolmetin is not known. However, studies in laboratory animals and man have demonstrated that the anti-inflammatory action of tolmetin is not due to pituitary-adrenal stimulation. Tolmetin inhibits prostaglandin synthetase in vitro and lowers the plasma level of prostaglandin E in man. This reduction in prostaglandin synthesis may be responsible for the anti-inflammatory action. Tolmetin does not appear to alter the course of the underlying disease in man.|ALTHOUGH IT DIFFERS CHEMICALLY FROM ASPIRIN & OTHER NONSTEROIDAL ANTI-INFLAMMATORY AGENTS, ITS PHARMACOLOGIC PROPERTIES ARE SIMILAR. /TOLMETIN SODIUM/|...INHIBITS PROSTAGLANDIN SYNTHETASE IN VITRO. IT ALSO HAS BEEN SHOWN TO LOWER PLASMA LEVEL OF PROSTAGLANDIN E IN MAN. HOWEVER, SIGNIFICANCE OF THESE ACTIONS IN RELATION TO CLINICAL EFFECTS IS NOT KNOWN. /TOLMETIN SODIUM/

MOST FREQUENTLY REPORTED ADVERSE REACTIONS ARE GI DISTURBANCES... EPIGASTRIC DISTRESS, INCL HEARTBURN, DYSPEPSIA, & ABDOMINAL PAIN, WAS MOST COMMON; OTHER REACTIONS INCL NAUSEA, VOMITING, & CONSTIPATION. GI BLEEDING WAS REPORTED OCCASIONALLY... IN CLINICAL STUDIES, PEPTIC ULCER OCCURRED IN APPROX 2% OF PT. /TOLMETIN SODIUM/|CNS REACTIONS REPORTED INCL HEADACHE, DIZZINESS, LIGHTHEADEDNESS, NERVOUSNESS, & DROWSINESS. ... OTHER REACTIONS OBSERVED OCCASIONALLY WERE RASH OR URTICARIA, PRURITUS, TINNITUS, & MILD EDEMA, WHICH WAS RELATED TO SODIUM RETENTION. /TOLMETIN SODIUM/|THE CASE OF A 51-YR-OLD MAN WHO DEVELOPED ANAPHYLAXIS AFTER RESTARTING ORAL THERAPY WITH TOLMETIN SODIUM FOR A PULLED GROIN MUSCLE IS PRESENTED.|A 56-YR-OLD MAN WITH RHEUMATOID ARTHRITIS, BEING TREATED WITH TOLMETIN SODIUM 1800 MG/DAY, DEVELOPED A DRUG FEVER BELIEVED TO BE DUE TO TOLMETIN SODIUM THERAPY.|For more Human Toxicity Excerpts (Complete) data for TOLMETIN (9 total), please visit the HSDB record page.

Anhydrous Tolmetin Sodium

Tolmetin Use and Manufacturing

Methods of Manufacturing

VII 1-Methyl-5-(4-methylbenzoyl)pyrrole-2-acetic acid Methyl 5-[cyanohydroxy(4-methylphenyl)methyl]-1-methylpyrrole-2-acetate, 55 mg (0.185 mmole) was heated on a steam bath in 15 percent NaOH (1.5 ml) for 3.5 hours. The reaction was cooled on ice for one hour then filtered. The solid was dissolved in distilled water, hot filtered, cooled, 3 N HCl was added to precipitate 0.48 g (100 percent) of 1-methyl-5-(4-methylbenzoyl)pyrrole-2-acetic acid, mp 153-158, undepressed by admixture with authentic material.Thus, specific examples of antiphlogistic carboxylic acids whose acyl residues are represented by B are the following: ... acetylsalicylic acid, 2-[(2, 6-dichloro-3-methylphenyl)-amino] benzoic acid, 2-[(3-chloro-2-methylphenyl)-amino] benzoic acid, 5-benzoyl-alpha-methyl-2-thiophene-acetic acid, 1-methyl-5-(4-methylbenzoyl)-1H-pyrrole-2-acetic acid, 5-fluoro-2-methyl-1-{[4-(methylsulfinyl)-phenyl]methylene}-1H-indene-3-acetic acid, 6, 11-dihydro-11-oxo-dibenz[b, e]oxepine-3-acetic acid, 6, 11-dihydro-11-oxo-dibenz[b, e]oxepine-2-acetic acid, ...EXAMPLE XXXXII Following the procedure of Example I, but substituting as equivalent amount of an appropriately substituted pyrrole-2-acetic acid for the

TOLECTIN (MCNEIL), ORAL: TABLETS 200 MG. /TOLMETIN SODIUM/

A GC METHOD FOR DETERMINING TOLMETIN IN MICRO-SAMPLES OF PLASMA IS DISCUSSED.|DETERMINATION OF TOLMETIN & ITS MAJOR METABOLITE IN PLASMA BY HPLC IS DESCRIBED.|GLC & SPECTROPHOTOMETRIC METHODS ARE DESCRIBED FOR DETERMINING TOLMETIN IN PLASMA.

Human Drugs -> FDA Approved Drug Products with Therapeutic Equivalence Evaluations (Orange Book) -> Active Ingredients|Pharmaceuticals

Computed Properties

Molecular Weight:257.28
XLogP3:2.8
Hydrogen Bond Donor Count:1
Hydrogen Bond Acceptor Count:3
Rotatable Bond Count:4
Exact Mass:257.10519334
Monoisotopic Mass:257.10519334
Topological Polar Surface Area:59.3
Heavy Atom Count:19
Complexity:347
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

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