PA1 2HCl

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

MedKoo CAT#: 561161

CAS#: 1620951-72-5 (free base)

Description: PA1 2HCl is a photoswitchable epithelial sodium channel (ENaC) blocker. PA1 2HCl enables the optical control of ENaC channels, in particular the δβγ isoform, by switching between blue and green light, or by turning on and off blue light. PA1 2HCl was used to modify functionally δβγENaC in amphibian and mammalian cells.


Chemical Structure

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PA1 2HCl
CAS# 1620951-72-5 (free base)

Theoretical Analysis

MedKoo Cat#: 561161
Name: PA1 2HCl
CAS#: 1620951-72-5 (free base)
Chemical Formula: C18H18Cl3N9O
Exact Mass:
Molecular Weight: 482.75
Elemental Analysis: C, 44.78; H, 3.76; Cl, 22.03; N, 26.11; O, 3.31

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 @medkoo.com or click below button.
Note: Price will be listed if it is available in the future.

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Synonym: PA1 2HCl; PA1 dihydrochloride; PA1

IUPAC/Chemical Name: 3,5-Diamino-6-chloro-N-[imino[[4-(2-phenyldiazenyl)phenyl]amino]methyl]-2-pyrazinecarboxamide dihydrochloride

InChi Key: JKZVQNCSFUAMFC-JZYARHMISA-N

InChi Code: InChI=1S/C18H16ClN9O.2ClH/c19-14-16(21)25-15(20)13(24-14)17(29)26-18(22)23-10-6-8-12(9-7-10)28-27-11-4-2-1-3-5-11;;/h1-9H,(H4,20,21,25)(H3,22,23,26,29);2*1H/b28-27+;;

SMILES Code: O=C(C1=NC(Cl)=C(N)N=C1N)NC(NC2=CC=C(/N=N/C3=CC=CC=C3)C=C2)=N.[H]Cl.[H]Cl

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: >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

Preparing Stock Solutions

The following data is based on the product molecular weight 482.75 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: Schönberger M, Althaus M, Fronius M, Clauss W, Trauner D. Controlling epithelial sodium channels with light using photoswitchable amilorides. Nat Chem. 2014 Aug;6(8):712-9. doi: 10.1038/nchem.2004. Epub 2014 Jul 20. PubMed PMID: 25054942.