Description

Buy Ritodrine Cas 26652-09-5

Ritodrine, formerly sold under the brand name Yutopar among others, is a tocolytic drug used to stop premature labor.^[2][3] It was withdrawn from the US market, according to the FDA Orange Book. It was available in oral tablets or as an injection and was typically used as the hydrochloride salt. The drug acts as a selective β₂-adrenergic receptor agonist.^[4] It was first approved for medical use in the United States in 1984.^[5] Ritodrine is used to treat preterm labor.^[2] Possible contraindications of ritodrine include type 2 diabetes, high blood pressure, and migraines. Most side effects of β₂-adrenergic receptor agonists result from their concurrent β₁-adrenergic receptor agonistic activity, and include increase in heart rate, rise in systolic blood pressure, decrease in diastolic blood pressure, chest pain secondary to myocardial infarction, and arrhythmia. β-Adrenergic receptor agonists may also cause fluid retention secondary to decrease in water clearance, which when added to the tachycardia and increased myocardial work, may result in heart failure. In addition, they increase gluconeogenesis in the liver and muscle resulting in hyperglycemia, which increases insulin requirements in diabetic patients. The passage of β-adrenergic receptor agonists through the placenta does occur and may be responsible for fetal tachycardia, as well as hypoglycemia or hyperglycemia at birth. It has also been associated with postpartum bleeding.^{[citation needed]} Ritodrine has been reported rarely to cause serious side effects including rhabdomyolysis, hepatotoxicity, leukopenia, pulmonary edema, and psychiatric symptoms, among others.^{[6][7][8][9][10]} Ritodrine is a short-acting β₂-adrenergic receptor agonist – a class of medication used for smooth muscle relaxation (other similar drugs are used in asthma or other pulmonary diseases such as salbutamol [albuterol]). Since ritodrine has a bulky N-substituent, it has high β₂-adrenergic receptor selectivity. Also, the 4-hydroxy group on the benzene ring is important for activity as it is needed to form hydrogen bonds. Since the drug is β₂-selective, it is used for premature labor.^[11] The 4-hydroxy group of ritodrine makes it susceptible to metabolism by catechol-O-methyl transferase (COMT). Ritodrine, also known as 4-hydroxy-β-hydroxy-N-(4-hydroxyphenylethyl)amphetamine or as N-(4-hydroxyphenylethyl)-4-hydroxynorephedrine, is a substituted phenethylamine and amphetamine derivative.^[12][13][14] The experimental log P of ritodrine is 2.4 and its predicted ranges from 1.53 to 2.3.^[12][13][14] Ritodrine was first approved for medical use in the United States in 1984.^[5] Ritodrine is the generic name of the drug and its INNTooltip International Nonproprietary Name, USANTooltip United States Adopted Name, BANTooltip British Approved Name, and DCFTooltip Dénomination Commune Française.^[15][16] In the case of the hydrochloride salt, its generic name is ritodrine hydrochloride and this is its USANTooltip United States Adopted Name and BANMTooltip British Approved Name.^[15][16] It is also known by its developmental code name DU-21220.^[15] The drug has been sold under brand names including Pre-Par, Utopar, and Yutopar, among others.^[15][16]

• Hexoprenaline
• Isoxsuprine
• Terbutaline
• Bedoradrine
• AI Overview

  Ritodrine (CAS 26652-09-5) is a β-adrenergic agonist and uterine relaxant available for research purposes,

  commonly supplied as Ritodrine hydrochloride (CAS 23239-51-2) from chemical suppliers like MedChemExpress and LGC Standards. It is used for studying the arrest of premature labor, primarily marketed for in vitro or animal research rather than human clinical use. 

  MedchemExpress.com +2

  Where to Buy (Research Grade):

  • MedChemExpress (MCE): Offers high-purity Ritodrine (DU21220) for scientific research.
  • LGC Standards/TRC: Supplies Ritodrine Hydrochloride for pharmaceutical testing and research.
  • Biosynth: Provides Ritodrine HCl (BR164351).
  • TargetMol/Biorbyt: Offer Ritodrine-d4 (deuterated) and Ritodrine hydrochloride for laboratory use. 
    TargetMol +4

  Important Information:

  • Usage: For research only; not for human consumption or pharmaceutical use by patients.
  • Context: Ritodrine was historically used to stop premature labor but has been withdrawn from the market in many regions due to safety concerns.
  • Related Compound: Ritodrine Hydrochloride (CAS 23239-51-2) is the common active salt form found in chemical catalogs. 
    MedchemExpress.com +4

  Ensure you review the manufacturer's safety data sheet (SDS) before purchase. 

  • Ritodrine (DU21220) | β-Adrenergic Agonist | MedChemExpress

    Ritodrine (Synonyms: DU21220) ... Ritodrine (DU21220) is a β-adrenergic agonist, also an effective smooth muscle and uterine relax...

    MedchemExpress.com
  • Ritodrine Hydrochloride | CAS 23239-51-2 - LGC Standards

    Copied to clipboard. ... Login or create an account to view prices and place your order. USE CODE TRCMAR10 TO CLAIM 10% OFF TRC PR...

    LGC Standards
  • Ritodrine HCl - Bio-X ™ | 23239-51-2 | BR164351 - Biosynth

    Ritodrine HCl - Bio-X ™ ; 25 mg, In Stock, $150.00 ; Custom Pack ; Custom Pack ; mg. Enter Pack Size. $0.00.

    Biosynth

  Show all

  Show more
  CAS 26652-09-5 (RitodrineHydrochloride)

  BOC Sciences

  https://www.bocsci.com › ... › Chemistry › Main Product

  RitodrineHydrochloride ; CAS NO. · 26652-09-5 ; Brand · BOC Sciences ; Molecular Formula. C17H21NO3 ; Molecular Weight. 287.35354 ; OBJECTIVE · Tocolytic drugs are used ...

  Ritodrine (25mg) from selleckchem

  SmallMolecules.com

  https://smallmolecules.com › Product Listings

  Ritodrine (DU21220) is a potent and selective agonist of β2-adrenergic. It rapidly inhibits recurrent uterine contractions and can be used in research to ...Read more

  Ritodrine-d4

  TargetMol

  https://www.targetmol.com › compound › ritodrine_d4

  Ritodrine-d4 is a deuterated compound of Ritodrine. Ritodrine has a CAS number of 26652-09-5. Chemical Properties. Molecular Weight, 291.38. Formula, C ...Read more

  Ritodrine-d4

  Biorbyt

  https://www.biorbyt.com › Products

  Ritodrine-d4 is a deuterium-labeled analog of the tocolytic agent Ritodrine (CAS 26652-09-5). This stable isotope-labeled compound is used as an internal ...

  Ritodrine HCl - Bio-X ™ | 23239-51-2 | BR164351

  Biosynth

  https://www.biosynth.com › ... › Adrenergic Receptors

  Ritodrine HCl - Bio-X ™ ; 25 mg, In Stock, $150.00 ; Custom Pack ; Custom Pack ; mg. Enter Pack Size. $0.00.Read more

  US$150.00

  ritodrine cas no 26652-09-5

  Echemi

  https://www.echemi.com › produce › pr220614143479...

  RITODRINE CAS NO 26652-09-5 buy. RITODRINE CAS NO 26652-09-5. GMP HALAL KOSHER ISO FDA. Cas No.: 26652-09-5. $11.11KG EXW. Get Latest Price. Price Valid: 2025 ...Read more

  US$11.11

  Ritodrine 26652-09-5

  MedchemExpress.com

  https://www.medchemexpress.com › cas › 26652-09-5

  MedChemExpress provides Ritodrine CAS 26652-09-5, related Reference ... CAS No: sales@MedChemExpress.com; 609-228-6898; Find Your Local Distributor.

  ritodrine hydrochloride

  LGC Standards

  https://www.lgcstandards.com › ritodrine-hydrochloride

  Buy ritodrine hydrochloride online at LGC Standards. High quality reference standards for the most reliable pharmaceutical testing.

  High quality RITODRINE CAS NO 26652-09-5 | China

  ChemicalBook

  https://m.chemicalbook.com › ProductDetail_EN_1285...

  Product Name, RITODRINE. CAS No, 26652-09-5. EC-No, 247-879-9. Min. Order, 1g. Purity, 99.0% min. Supply Ability, 100 tons min. Release date, 2025/06/25 ...

  People also ask

  Is ritodrine still available?

  What is the price of ritodrine tablet?

  What is the drug ritodrine used for?

  What is another name for ritodrine?

  CAS 23239-51-2: Ritodrine hydrochloride

  CymitQuimica

  https://cymitquimica.com › CAS list

  Ritodrine hydrochloride is a synthetic beta-adrenergic agonist primarily used as a tocolytic agent to inhibit premature labor by relaxing uterine ...Read more