Synonym
Theophylline ephedrine; Theophylline ephedrine [INN]; Theophylline ephedrine [WHO-DD]; Theophylline-(-)-ephedrine compound; LMS3EG69X8
IUPAC/Chemical Name
1,3-dimethyl-3,9-dihydro-1H-purine-2,6-dione--(1R,2S)-2-(methylamino)-1-phenylpropan-1-ol (1/1)
InChi Key
QCGRAEADKWZHRR-GNAZCLTHSA-N
InChi Code
InChI=1S/C10H15NO.C7H8N4O2/c1-8(11-2)10(12)9-6-4-3-5-7-9;1-10-5-4(8-3-9-5)6(12)11(2)7(10)13/h3-8,10-12H,1-2H3;3H,1-2H3,(H,8,9)/t8-,10-;/m0./s1
SMILES Code
CN[C@@H](C)[C@H](O)C1=CC=CC=C1.CN2C3=C(N=CN3)C(=O)N(C)C2=O
Appearance
To be determined
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
To be determined
Shelf Life
>2 years if stored properly
Drug Formulation
To be determined
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
Preparing Stock Solutions
The following data is based on the
product
molecular weight
345.40
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.
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 |
1: Graham TE. Caffeine and exercise: metabolism, endurance and performance.
Sports Med. 2001;31(11):785-807. doi: 10.2165/00007256-200131110-00002. PMID:
11583104.
2: Senchina DS, Hallam JE, Kohut ML, Nguyen NA, Perera MA. Alkaloids and athlete
immune function: caffeine, theophylline, gingerol, ephedrine, and their
congeners. Exerc Immunol Rev. 2014;20:68-93. PMID: 24974722.
3: Weinberger M, Bronsky E, Bensch GW, Bock GN, Yecies JJ. Interaction of
ephedrine and theophylline. Clin Pharmacol Ther. 1975 May;17(5):585-92. doi:
10.1002/cpt1975175585. PMID: 1092514.
4: Simons FE. Nonprescription availability of theophylline, epinephrine and
ephedrine for asthma. CMAJ. 1987 Nov 1;137(9):789. PMID: 3442767; PMCID:
PMC1267346.
5: Pinnas JL, Schachtel BP, Chen TM, Roseberry HR, Thoden WR. Inhaled
epinephrine and oral theophylline-ephedrine in the treatment of asthma. J Clin
Pharmacol. 1991 Mar;31(3):243-7. doi: 10.1002/j.1552-4604.1991.tb04969.x. PMID:
2019665.
6: Brooks SM, Sholiton LJ, Werk EE Jr, Altenau P. The effects of ephedrine and
theophylline on dexamethasone metabolism in bronchial asthma. J Clin Pharmacol.
1977 May-Jun;17(5-6):308-18. doi: 10.1002/j.1552-4604.1977.tb04610.x. PMID:
870547.
7: Erk N. Assay of ephedrine hydrochloride and theophylline in pharmaceutical
formulations by differential-derivative spectroscopy. J Pharm Biomed Anal. 2000
Aug 15;23(2-3):255-61. doi: 10.1016/s0731-7085(00)00288-0. PMID: 10933518.
8: Taylor WF, Heimlich EM, Strick L, Busser R. Ephedrine and theophylline in
asthmatic children: quantitive observations on the combination and ephedrine
tachyphylaxis. Ann Allergy. 1965 Sep;23(9):437-40. PMID: 5318774.
9: Bush RK, Smith AM, Welling PG, Alcala JC, Lee TP. A comparison of a
theophylline-ephedrine combination with terbutaline. Ann Allergy. 1978
Jul;41(1):13-7. PMID: 208429.