Carbuterol (free base)

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MedKoo CAT#: 412328

CAS#: 34866-47-2 (free base)

Description: Carbuterol (free base) is a sympathomimetric specific for beta2 receptors; proposed bronchodilator agent..

Chemical Structure

Carbuterol (free base)
CAS# 34866-47-2 (free base)

Theoretical Analysis

MedKoo Cat#: 412328
Name: Carbuterol (free base)
CAS#: 34866-47-2 (free base)
Chemical Formula: C13H21N3O3
Exact Mass: 267.16
Molecular Weight: 267.330
Elemental Analysis: C, 58.41; H, 7.92; N, 15.72; O, 17.95

Price and Availability

This product is not in stock, which may be available by custom synthesis. For cost-effective reason, minimum order is 1g (price is usually high, lead time is 2~3 months, depending on the technical challenge). Quote less than 1g will not be provided. To request quote, please email to sales or click below button.
Note: Price will be listed if it is available in the future.

Related CAS #: 34866-46-1 (HCl), 34866-47-2 (free base)

Synonym: Carbuterol (free base); EINECS252-257-5; EINECS-252-257-5; EINECS 252-257-5

IUPAC/Chemical Name: 1-(5-(2-(tert-butylamino)-1-hydroxyethyl)-2-hydroxyphenyl)urea


InChi Code: InChI=1S/C13H21N3O3/c1-13(2,3)15-7-11(18)8-4-5-10(17)9(6-8)16-12(14)19/h4-6,11,15,17-18H,7H2,1-3H3,(H3,14,16,19)

SMILES Code: CC(C)(NCC(c1cc(NC(N)=O)c(O)cc1)O)C

Appearance: Solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO

Shelf Life: >3 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

Product Data:

Preparing Stock Solutions

The following data is based on the product molecular weight 267.330000000000000000000000000000 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

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1: Sanders JP, Potter DE, Ellis S, Bee DE, Grant JA. Metabolic and cardiovascular effects of carbuterol and metaproterenol. J Allergy Clin Immunol. 1977 Sep;60(3):174-9. doi: 10.1016/0091-6749(77)90121-x. PMID: 19514. 2: Misra NP, Tiwari UC, Khemchandani GT. Double-blind crossover study of carbuterol and salbutamol in bronchial asthma. J Int Med Res. 1981;9(4):261-7. doi: 10.1177/030006058100900405. PMID: 6114884. 3: Beumer HM, Mills JG, Sharpe PC. Comparative study of carbuterol and salbutamol from metered aerosols in bronchial asthma. Respiration. 1978;35(4):220-3. doi: 10.1159/000193882. PMID: 345380. 4: Minette A, Marcq M, Gepts L. Carbuterol, fenoterol, orciprenaline, salbutamol and terbutaline per os in reversible obstructive chronic bronchitis. Bull Eur Physiopathol Respir. 1976 Jul-Aug;12(4):545-53. PMID: 13895. 5: Tabas A, Rodríguez A, Lobera T, Diéguez I, Oehling A. Carbuterol, salbutamol and DSCG in exercise-induced asthma. Allergol Immunopathol (Madr). 1985 Nov- Dec;13(6):493-500. PMID: 3938615. 6: Colella DF, Chakrin LW, Shetzline A, Wardell JR Jr. Characterization of the adrenergic activity of carbuterol (SK&F 40383-A). Eur J Pharmacol. 1977 Dec 1;46(3):229-41. doi: 10.1016/0014-2999(77)90338-7. PMID: 22441. 7: Rhoades RB, Leifer KN, Bloom FL, Wittig HJ. Spirometric comparison of carbuterol and isoproterenol aerosol therapy in bronchial asthma. A double blind, matched-pair study of 28 adults and a double blind crossover study of 18 children. Am Rev Respir Dis. 1976 Jul;114(1):79-86. doi: 10.1164/arrd.1976.114.1.79. PMID: 7174. 8: James TD, Lyons HA. A comparative study of bronchodilator effects of carbuterol and ephedrine. JAMA. 1979 Feb 16;241(7):704-5. PMID: 368368. 9: Irsigler GB, Ker J. Comparison of carbuterol and hexoprenaline aerosol in bronchial asthma. S Afr Med J. 1978 Apr 15;53(15):571-3. PMID: 354041. 10: Funahashi A, Hamilton LH. A study of a new bronchodilator: carbuterol. Am Rev Respir Dis. 1976 Mar;113(3):398-40. doi: 10.1164/arrd.1976.113.3.398. PMID: 1259244.