MedKoo Cat#: 574200 | Name: SPQ
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Description:

WARNING: This product is for research use only, not for human or veterinary use.

SPQ is a fluorescent chloride indicator. It has been used to assess voltage-sensitive chloride transport in placental microvillus vesicles. It has also been used to continuously quantify intracellular calcium efflux induced by parathyroid hormone, forskolin, and PMA in isolated human erythrocytes. In addition, SPQ has been used to determine the type of ion conductance induced by the cystic fibrosis transmembrane conductance regulator (CFTR) in HEK293 cells expressing pTrial10-CRTR2.

Chemical Structure

SPQ
SPQ
CAS#83907-40-8

Theoretical Analysis

MedKoo Cat#: 574200

Name: SPQ

CAS#: 83907-40-8

Chemical Formula: C13H15NO4S

Exact Mass: 281.0722

Molecular Weight: 281.33

Elemental Analysis: C, 55.50; H, 5.37; N, 4.98; O, 22.75; S, 11.40

Price and Availability

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100mg USD 300.00 2 weeks
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Related CAS #
No Data
Synonym
SPQ
IUPAC/Chemical Name
6-methoxy-1-(3-sulfopropyl)-quinolinium, inner salt
InChi Key
ZVDGOJFPFMINBM-UHFFFAOYSA-N
InChi Code
InChI=1S/C13H15NO4S/c1-18-12-5-6-13-11(10-12)4-2-7-14(13)8-3-9-19(15,16)17/h2,4-7,10H,3,8-9H2,1H3
SMILES Code
COC1=CC(C=CC=[N+]2CCCS([O-])(=O)=O)=C2C=C1
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 and water
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
More Info
SPQ displays excitation maxima of 320 and 350 nm and an emission maximum of 445 nm.
Product Data
Biological target:
SPQ is a fluorescent chloride indicator.
In vitro activity:
To be determined
In vivo activity:
To be determined
Solvent mg/mL mM comments
Solubility
DMSO 1.0 3.55
Water 25.0 88.86
Note: There can be variations in solubility for the same chemical from different vendors or different batches from the same vendor. The following factors can affect the solubility of the same chemical: solvent used for crystallization, residual solvent content, polymorphism, salt versus free form, degree of hydration, solvent temperature. Please use the solubility data as a reference only. Warming and sonication will facilitate dissolving. Still have questions? Please contact our Technical Support scientists.

Preparing Stock Solutions

The following data is based on the product molecular weight 281.33 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:
To be determined
In vitro protocol:
To be determined
In vivo protocol:
To be determined
1. Illsley, N.P., and Verkman, A.S. Membrane chloride transport measured using a chloride-sensitive fluorescent probe. Biochemistry 26(5), 1215-1219 (1987). 2. Soldati, L., Adamo, D., Spaventa, R., et al. Chloride fluxes activated by parathyroid hormone in human erythrocytes. Biochem. Biophys. Res. Commun. 269(2), 470-473 (2000). 3. MacVinish, L.J., Gill, D.R., Hyde, S.C., et al. Chloride secretion in the trachea of null cystic fibrosis mice: the effects of transfection with pTrial10-CFTR2. J. Physiol. 499(Pt. 3), 677-687 (1997).