Fluorescein dipotassium | CAS# 6417-85-2 | Biochemical

MedKoo Cat#: 575584 | Name: Fluorescein dipotassium

Description:

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

Fluorescein dipotassium is a colorimetric probe formed by the reaction of adipic acid dihydrazide and fluorescein isothiocyanate.

Chemical Structure

Fluorescein dipotassium

CAS#6417-85-2 (dipotassium)

Theoretical Analysis

MedKoo Cat#: 575584

Name: Fluorescein dipotassium

CAS#: 6417-85-2 (dipotassium)

Chemical Formula: C20H10K2O5

Exact Mass: 0.0000

Molecular Weight: 408.49

Elemental Analysis: C, 58.81; H, 2.47; K, 19.14; O, 19.58

Price and Availability

This product is currently not in stock but may be available through custom synthesis. To ensure cost efficiency, the minimum order quantity is 1 gram. The estimated lead time is 2 to 4 months, with pricing dependent on the complexity of the synthesis (typically high for intricate chemistries). Quotes for quantities below 1 gram will not be provided. To request a quote, please click the button below. Note: If this product becomes available in stock in the future, pricing will be listed accordingly.

Bulk Inquiry

Related CAS #

518-47-8 (disodium) 2321-07-5 (free base) 6417-85-2 (dipotassium)

Synonym

Fluorescein dipotassium; Potassium fluorescein; D&C Yellow No. 9; C.I. 45350; 12417 Yellow; Japan Yellow 202(2); Uranin K;Yellow No. 202(2)

IUPAC/Chemical Name

Spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, 3',6'-dihydroxy-, dipotassium salt

InChi Key

DZSPMLRDMGJVAT-UHFFFAOYSA-L

InChi Code

InChI=1S/C20H12O5.2K/c21-11-5-7-15-17(9-11)24-18-10-12(22)6-8-16(18)20(15)14-4-2-1-3-13(14)19(23)25-20;;/h1-10,21-22H;;/q;2*+1/p-2

SMILES Code

O=C1OC2(C3=C(OC4=C2C=CC([O-])=C4)C=C([O-])C=C3)C5=C1C=CC=C5.[K+].[K+]

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

More Info

Instruction

View handling instruction

Preparing Stock Solutions

The following data is based on the product molecular weight 408.49 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. Zhang L, Zhang X. A selectively fluorescein-based colorimetric probe for detecting copper(II) ion. Spectrochim Acta A Mol Biomol Spectrosc. 2014 Dec 10;133:54-9. doi: 10.1016/j.saa.2014.04.130. Epub 2014 Apr 30. PMID: 24929315. 2. Ahn B, Rhee SG, Stadtman ER. Use of fluorescein hydrazide and fluorescein thiosemicarbazide reagents for the fluorometric determination of protein carbonyl groups and for the detection of oxidized protein on polyacrylamide gels. Anal Biochem. 1987 Mar;161(2):245-57. doi: 10.1016/0003-2697(87)90448-9. PMID: 2883911. 3. Zhang J, Zhang L, Wei Y, Ma J, Shuang S, Cai Z, Dong C. A selectively fluorescein-based colorimetric probe for detecting copper(II) ion. Spectrochim Acta A Mol Biomol Spectrosc. 2014 Mar 25;122:731-6. doi: 10.1016/j.saa.2013.11.096. Epub 2013 Nov 23. PMID: 24370938.