C6144

Chlorophyll a

Powder

• Synonyme(s) : Pheophytin; universal photosynthetic pigment
• Formule empirique (notation de Hill): C₅₅H₇₂MgN₄O₅
• Numéro CAS: 479-61-8
• Poids moléculaire : 893.49
• Numéro Beilstein : 3586237
• Numéro CE : 207-536-6
• Numéro MDL: MFCD00079050
• Code UNSPSC : 12171500
• ID de substance PubChem : 24892839
• Nomenclature NACRES : NA.47

Propriétés

• product name: Chlorophyll a, from Anacystis nidulans algae
• Source biologique: Anacystis nidulans algae
• Niveau de qualité: 200
• Forme: powder
• Technique(s): titration: suitable
• Impuretés: chlorophyll b, free
• Couleur: blue to very dark blue
• Pf: 150-153 °C
• Solubilité: diethyl ether: 0.1 mg/10 mL
• ε (coefficient d'extinction): 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
• Température de stockage: −20°C
• Chaîne SMILES: CCc1c(C)c2cc3c(C=C)c(C)c4cc5nc([C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@@H]5C)c6[C@@H](C(=O)OC)C(=O)c7c(C)c(cc1n2)n([Mg]n34)c67
• InChI: 1S/C55H73N4O5.Mg/c1-13-39-35(8)42-28-44-37(10)41(24-25-48(60)64-27-26-34(7)23-17-22-33(6)21-16-20-32(5)19-15-18-31(3)4)52(58-44)50-51(55(62)63-12)54(61)49-38(11)45(59-53(49)50)30-47-40(14-2)36(9)43(57-47)29-46(39)56-42;/h13,26,28-33,37,41,51H,1,14-25,27H2,2-12H3,(H-,56,57,58,59,61);/q-1;+2/p-1/b34-26+;/t32-,33-,37+,41+,51-;/m1./s1
• Clé InChI: ATNHDLDRLWWWCB-AENOIHSZSA-M

Description

Application

A procedure has been described for harvesting native light-harvesting complex IIb (LHCIIb).

Chlorophyll a has been used as a standard for the calibration of fluorometer.

Actions biochimiques/physiologiques

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.

Conditionnement

Bottomless glass bottle. Contents are inside inserted fused cone.

Sealed ampule.

Informations sur la sécurité

• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 3
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable
• Équipement de protection individuelle: Eyeshields, Gloves, type N95 (US)