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

MedKoo CAT#: 208339

CAS#: 521972-99-6

Description: Protonstatin-1 is a selective small-molecule inhibitor of PM H+ -ATPase activity that inhibits auxin transport.

Chemical Structure

CAS# 521972-99-6

Theoretical Analysis

MedKoo Cat#: 208339
Name: Protonstatin-1
CAS#: 521972-99-6
Chemical Formula: C8H5NO2S2
Exact Mass: 210.9762
Molecular Weight: 211.25
Elemental Analysis: C, 45.48; H, 2.39; N, 6.63; O, 15.15; S, 30.35

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.

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Synonym: protonstatin-1, Protonstatin1, PS-1; NSC31192

IUPAC/Chemical Name: (5Z)-5-[(Furan-2-yl)methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one


InChi Code: InChI=1S/C8H5NO2S2/c10-7-6(13-8(12)9-7)4-5-2-1-3-11-5/h1-4H,(H,9,10,12)/b6-4-


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 211.25 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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Yang Y, Liu X, Guo W, Liu W, Shao W, Zhao J, Li J, Dong Q, Ma L, He Q, Li Y, Han J, Lei X. Testing the polar auxin transport model with a selective plasma membrane H+ -ATPase inhibitor. J Integr Plant Biol. 2022 Jun;64(6):1229-1245. doi: 10.1111/jipb.13256. Epub 2022 May 27. PMID: 35352470.