The following are the current most viewed articles on Wikipedia within Wikipedia's Tetrapyrroles category. Think of it as a What's Hot list for Tetrapyrroles. More info »

This is a beta release and so the figures may be a day or two out of date. We'd love to get your thoughts.

Rank	Topic	Wikipedia views
1	Bilirubin	6,708
2	Chlorophyll	4,265
3	Heme	1,706
4	Porphyrin	881
5	Urobilinogen	567
6	Hydroxocobalamin	244
7	Chlorophyll a	199
8	Biliverdin	168
9	Urobilin	132
10	Protoporphyrin	120
11	Chlorophyll b	108
12	Chlorophyllin	101
13	Phycobilin	86
14	Protoporphyrin IX	77
15	Chlorin	69
16	Zinc protoporphyrin	67
17	Tetrapyrrole	59
18	Bilin (biochemistry)	57
19	Porphin	47
20	Corrin	45
21	Tetraphenylporphyrin	43
22	Heme b	42
23	Chlorophyll c1	41
24	Heme C	38
25	Coproporphyrinogen III	29
26	Heme a	29
27	Corrole	28
28	Phycoerythrobilin	27
29	Phycocyanobilin	26
30	Temoporfin	25
31	Chlorophyll c2	23
32	Chlorophyll d	20
33	Phycoerythrocyanin	20
34	Bilirubin (data page)	17
35	Talaporfin	17
36	Hydroxymethylbilane	14
37	Corrinoid	13
38	Tetraphenylporphine sulfonate	13
39	Coproporphyrinogen I	12
40	Phycourobilin	12
41	Heme o	11
42	Uroporphyrinogen III	8
43	Motexafin lutetium	less than 5 views
44	2-(1-Hexyloxyethyl)-2-devinyl pyropheophorbide-a	less than 5 views

Parent categories

• Macrocycles
• Pyrroles

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