All Photos(2)



Chlorophyll a

from spinach

Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level

biological source



≥85% (HPLC)




chlorophyll b, essentially free

ε (extinction coefficient)

10.6-11.8 × 104 at 428 nm in diethyl ether (vs. 11.17 × 104, lit.)
8.2-9.1 × 104 at 662 nm in diethyl ether (vs. 8.63 × 104, lit.)

shipped in

dry ice

storage temp.


SMILES string




InChI key


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General description

Chlorophyll a is an important light-harvesting, green or blue color pigment present in the photosynthetic membranes of the chloroplasts in plant cells. It functions as an antenna pigment in photosystems I and II.


A procedure has been described for harvesting native light-harvesting complex IIb (LHCIIb).
Chlorophyll a has been used:
  • to study the variation in carotenoids composition with changing colors and maturation in soybean seeds
  • to examine the use of chlorophyll distribution maps obtained from hyperspectral imaging for the non-destructive diagnosis of Nitrogen deficiency
  • as a standard to determine the concentration of the analyte by fluorescence spectrophotometric technique in the water sample collected from the yellow river
  • as a standard to quantify the amount of chlorophyllous pigments gathered from algae by high performance liquid chromatographic (HPLC) technique
  • in the identification of pheophytin a from environmentally friendly cultivated green peppers
  • to sense different nitric oxide (NO) species


1, 5, 10 mg in ampule
Sealed ampule.

Biochem/physiol Actions

Chlorophyll a binds to the protein molecules CP47 and CP43, forming the inner antenna of the reaction center of Photosystem II. In photosystem I, the binding sites of chlorophyll a includes the polypeptides spread across the membranes. Scarcity in formation of chlorophyll and a low chlorophyll density can lead to deficiency of nitrogen in plants leaves.

Storage Class Code

13 - Non Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Certificate of Origin

Nitric oxide sensing by chlorophyll
Bhattacharya A, et al.
Analytica Chimica Acta, 985, 101e113-101e113 (2017)
A reappraisal of the use of DMSO for the extraction and determination of chlorophylls a and b in lichens and higher plants
Barnes JD, et al.
Environmental and Experimental Botany, 32(2), 85-100 (1992)
Chlorophyll Biosynthesis.
D. Von Wettstein et al.
The Plant cell, 7(7), 1039-1057 (1995-07-01)
Nondestructive diagnostics of nitrogen deficiency by cucumber leaf chlorophyll distribution map based on near infrared hyperspectral imaging
Ji-Yong S, et al.
Sci. Hortic., 138, 190-197 (2012)
Photobiology: The Science of Life and Light (2007)

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