Description: Water soluble, amino-reactive sulfo-Cyanine3 NHS ester. Efficiently labels proteins and peptides in purely aqueous solution, without need for organic co-solvent. Ideal for proteins with low solubility, and proteins prone to denaturation.This product is an analog of Cy3 NHS ester. Sulfo-Cyanine3 NHS ester replaces Cy3, Alexa Fluor 546, and DyLight 549 for all applications.

Name: Sulfo-Cyanine3 NHS ester
CAS#: 1424433-17-9
Chemical Formula: C34H38KN3O10S2
Exact Mass: 751.163
Molecular Weight: 751.907
Elemental Analysis: C, 54.31; H, 5.09; K, 5.20; N, 5.59; O, 21.28; S, 8.53

Related CAS #: 1424150-38-8 (sodium salt)   1518643-34-9 (inner salt)   1393427-85-4 (without anion)   1393363-07-9 (chloride)  

Synonym: Sulfo-Cy-3 NHS Ester

IUPAC/Chemical Name: potassium 1-(6-((2,5-dioxopyrrolidin-1-yl)oxy)-6-oxohexyl)-3,3-dimethyl-2-((E)-3-((E)-1,3,3-trimethyl-5-sulfonatoindolin-2-ylidene)prop-1-en-1-yl)-3H-indol-1-ium-5-sulfonate

InChi Key: ZNWGQSGULWNMHO-UHFFFAOYSA-M

InChi Code: InChI=1S/C34H39N3O10S2.K/c1-33(2)24-20-22(48(41,42)43)13-15-26(24)35(5)28(33)10-9-11-29-34(3,4)25-21-23(49(44,45)46)14-16-27(25)36(29)19-8-6-7-12-32(40)47-37-30(38)17-18-31(37)39;/h9-11,13-16,20-21H,6-8,12,17-19H2,1-5H3,(H-,41,42,43,44,45,46);/q;+1/p-1

SMILES Code: CC1(C)C2=CC(S(=O)([O-])=O)=CC=C2N(C)/C1=C/C=C/C3=[N+](CCCCCC(ON4C(CCC4=O)=O)=O)C5=CC=C(S(=O)(O[K])=O)C=C5C3(C)C

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: >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