Synephrine HCl
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MedKoo CAT#: 329869

CAS#: 5985-28-4 (HCl)

Description: Synephrine, or, more specifically, p-synephrine, is an alkaloid, occurring naturally in some plants and animals, and also in approved drugs products as its m-substituted analog known as neo-synephrine. p-Synephrine and m-synephrine are known for their longer acting adrenergic effects compared to norepinephrine. This substance is present at very low concentrations in common foodstuffs such as orange juice and other orange (Citrus species) products, both of the "sweet" and "bitter" variety.


Chemical Structure

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Synephrine HCl
CAS# 5985-28-4 (HCl)

Theoretical Analysis

MedKoo Cat#: 329869
Name: Synephrine HCl
CAS#: 5985-28-4 (HCl)
Chemical Formula: C9H14ClNO2
Exact Mass: 203.07
Molecular Weight: 203.666
Elemental Analysis: C, 53.08; H, 6.93; Cl, 17.41; N, 6.88; O, 15.71

Price and Availability

Size Price Availability Quantity
5g USD 225
10g USD 370
25g USD 575
50g USD 750
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Related CAS #: 5985-28-4 (HCl)   16589-24-5 (tartrate)   94-07-5 (racemate)   614-35-7 (R-isomer)    

Synonym: Synephrine HCl; Sympatol; oxedrine;

IUPAC/Chemical Name: 4-Hydroxy-alpha-((methylamino)methyl)benzyl alcohol hydrochloride

InChi Key: COTCEGYSNTWJQV-UHFFFAOYSA-N

InChi Code: InChI=1S/C9H13NO2.ClH/c1-10-6-9(12)7-2-4-8(11)5-3-7;/h2-5,9-12H,6H2,1H3;1H

SMILES Code: CNCC(O)C1=CC=C(O)C=C1.[H]Cl

Appearance: Solid powder

Purity: >95% (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: >2 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

More Info: The preparations used in traditional Chinese medicine (TCM), also known as Zhi Shi, are the immature and dried whole oranges from Citrus aurantium (Fructus Aurantii Immaturus). Extracts of the same material or purified synephrine are also marketed in the US, sometimes in combination with caffeine, as a weight-loss-promoting dietary supplement for oral consumption. While the traditional preparations have been in use for millennia as a component of TCM-formulas, synephrine itself is not an approved OTC drug. As a pharmaceutical, m-synephrine is still used as a sympathomimetic (i.e. for its hypertensive and vasoconstrictor properties), mostly by injection for the treatment of emergencies such as shock, and rarely orally for the treatment of bronchial problems associated with asthma and hay-fever.

Biological target:
In vitro activity:
In vivo activity:

Preparing Stock Solutions

The following data is based on the product molecular weight 203.67 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
Formulation protocol:
In vitro protocol:
In vivo protocol:

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