BioReagent, suitable for fluorescence, ≥97.0% (HPLC)

9-Julolidinylmethylenemalononitrile, DCVJ
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
Beilstein/REAXYS Number:
MDL number:
PubChem Substance ID:
Pricing and availability is not currently available.

Quality Level

product line



≥97.0% (HPLC)


DMSO: soluble
chloroform: soluble


λex 433 nm; λem 500 nm in 50 mM Tris pH 8.0; 40% glycerol


suitable for fluorescence

SMILES string




InChI key



Bottomless glass bottle. Contents are inside inserted fused cone.

Other Notes

Fluorescent probe for binding to proteins etc., quantum yield increases by decreasing free rotation; abs at ~450 nm, em at 480-505 nm (solvent dep.)

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Markus J Schmidt et al.
Journal of biological engineering, 11, 24-24 (2017-08-09)
The molecular rotor 9-(2-Carboxy-2-cyanovinyl)julolidine (CCVJ) is presumed to have a sensitivity towards velocity or shear which is supposed to result in a change in fluorescence quantum yield. Furthermore, a previously reported photoisomeric behavior may contribute to the measured fluorescence intensity...
Christian Lubich et al.
Pharmaceutical research, 32(9), 2863-2876 (2015-03-20)
Sub-visible particles were shown to facilitate unwanted immunogenicity of protein therapeutics. To understand the root cause of this phenomenon, a comprehensive analysis of these particles is required. We aimed at establishing a flow-cytometry-based technology to analyze the amount, size distribution...
C E Kung et al.
Biochemistry, 28(16), 6678-6686 (1989-08-08)
9-(Dicyanovinyl)julolidine (DCVJ) is a fluorescent dye whose intramolecular rotational relaxation is solvent dependent. Since its quantum yield increases with decreasing free volume, this molecule has been very useful in monitoring synthetic polymer reactions and measuring local microviscosity changes in phospholipid...
T Furuno et al.
Immunology letters, 33(3), 285-288 (1992-08-01)
A confocal fluorescence microscope was used to study the exocytotic secretory processes of mast cells in combination with an fluorescent molecular rotor, 9-(dicyanovinyl)julolidine (DCVJ). DCVJ is known to be an unique fluorescent dye which increases its quantum yield with decreasing...
T Iio et al.
Journal of biochemistry, 109(4), 499-502 (1991-04-01)
A molecular rotor, 9-(dicyanovinyl)julolidine (DCVJ), is a fluorescent dye whose intramolecular rotation determines its fluorescence yield [Kung, C.E. & Reed, J.K. (1989) Biochemistry 28, 6678-6686]. DCVJ binds to bovine brain calmodulin and emits strong fluorescence. In fluorescence titration experiments, the...

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