Chlorophyll a
SIGMA/C6144 - from Anacystis nidulans algae
Synonym: Pheophytin; universal photosynthetic pigment
CAS Number: 479-61-8
Empirical Formula (Hill Notation): C55H72MgN4O5
Molecular Weight: 893.49
EC Number: 207-536-6
MDL Number: MFCD00079050
Linear Formula: C55H72MgN4O5
Product Type: Chemical
Representative of vacuum-sealed clear ampule packaging. Non-uniform tips are an inherent feature in this sealing process.
| ε (extinction coefficient) | 11.1-12.1 × 104 at 428-430 nm in diethyl ether |
| 8.3-9.4 × 104 at 660-662 nm in diethyl ether | |
| application(s) | diagnostic assay manufacturing hematology histology |
| biological source | Anacystis nidulans algae |
| color | blue to very dark blue |
| form | powder |
| impurities | chlorophyll b, free |
| InChI | 1S/C55H73N4O5.Mg/c1-13-39 |
| InChI key | ATNHDLDRLWWWCB-AENOIHSZSA |
| mp | 150-153 °C |
| Quality Level | 200  |
| SMILES string | CCc1c(C)c2cc3c(C=C)c(C)c4 |
| solubility | diethyl ether: 0.1 mg/10 mL |
| storage temp. | −20°C |
| technique(s) | titration: suitable |
| Application: | A procedure has been described for harvesting native light-harvesting complex IIb (LHCIIb). |
| Application: | Chlorophyll a has been used as a standard for the calibration of fluorometer. |
| Biochem/physiol Actions: | Chlorophyll a is an essential pigment in oxygenic photosynthesis. In photosystems, it is present as an antenna pigment as well as in reaction center I and II. Chlorophyll a is a blue-green pigment which absorbs light in 400-450nm and 640-660nm range. In photosynthesis, the energy absorbed by chlorophyll transforms carbon dioxide and water into carbohydrates and oxygen. When chlorophyll absorbs light energy, an electron in chlorophyll is excited from a lower energy state to a higher energy state. In this higher energy state, the electron is more readily transferred to another molecule. This starts a chain of electron-transfer steps, which ends with an electron transferred to carbon dioxide. |
| Packaging: | Bottomless glass bottle. Contents are inside inserted fused cone. |
| Packaging: | Sealed ampule. |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| mp | 150-153 °C |
| Storage Temp. | −20°C |
| UNSPSC | 12171500 |