Protocatechuic acid

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Protocatechuic acid

Quality:

3,4-dihydroxybenzoic acid - chemical compound. Article “Protocatechuic acid” in English Wikipedia has 49.3 points for quality (as of July 1, 2025). The article contains 23 references and 8 sections.

This article has the best quality in German Wikipedia. However, this article is the most popular in English version.

Since the creation of article “Protocatechuic acid”, its content was written by 34 registered users of English Wikipedia and edited by 134 registered Wikipedia users in all languages.

The article is cited 100 times in English Wikipedia and cited 697 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #94588 in April 2012
  • Global: #144486 in August 2011

The highest popularity rank from 2008:

  • Local (English): #419070 in June 2014
  • Global: #499596 in April 2015

There are 14 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

Languages with the highest quality

#LanguageQuality gradeQuality score
1German (de)
Protocatechusäure
56.2539
2Esperanto (eo)
3,4-Duhidroksobenzoata acido
56.1258
3English (en)
Protocatechuic acid
49.277
4Italian (it)
Acido protocatecuico
45.4709
5Polish (pl)
Kwas protokatechowy
32.4925
6Serbo-Croatian (sh)
Protokatehuinska kiselina
30.7963
7Serbian (sr)
Protokatehuinska kiselina
25.8443
8Romanian (ro)
Acid protocatecuic
23.9575
9Chinese (zh)
原儿茶酸
21.5284
10Portuguese (pt)
Ácido protocatecuico
19.5498
More...

The following table shows the most popular language versions of the article.

Most popular in all the time

The most popular language versions of the article "Protocatechuic acid" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Protocatechuic acid
252 906
2Japanese (ja)
プロトカテク酸
35 905
3German (de)
Protocatechusäure
35 345
4French (fr)
Acide protocatéchique
17 248
5Russian (ru)
Протокатеховая кислота
16 786
6Polish (pl)
Kwas protokatechowy
14 253
7Portuguese (pt)
Ácido protocatecuico
12 808
8Chinese (zh)
原儿茶酸
7 185
9Italian (it)
Acido protocatecuico
3 670
10Persian (fa)
پروتوکاتکویک اسید
2 415
More...

The following table shows the language versions of the article with the highest popularity in the last month.

Most popular in June 2025

The most popular language versions of the article "Protocatechuic acid" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Protocatechuic acid
881
2Japanese (ja)
プロトカテク酸
159
3Chinese (zh)
原儿茶酸
100
4German (de)
Protocatechusäure
78
5Russian (ru)
Протокатеховая кислота
71
6Italian (it)
Acido protocatecuico
64
7Polish (pl)
Kwas protokatechowy
47
8French (fr)
Acide protocatéchique
42
9Portuguese (pt)
Ácido protocatecuico
29
10Romanian (ro)
Acid protocatecuic
9
More...

The following table shows the language versions of the article with the highest Authors’ Interest.

The highest AI

Language versions of the article "Protocatechuic acid" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1German (de)
Protocatechusäure
45
2English (en)
Protocatechuic acid
34
3French (fr)
Acide protocatéchique
16
4Italian (it)
Acido protocatecuico
10
5Japanese (ja)
プロトカテク酸
7
6Polish (pl)
Kwas protokatechowy
6
7Portuguese (pt)
Ácido protocatecuico
4
8Esperanto (eo)
3,4-Duhidroksobenzoata acido
3
9Russian (ru)
Протокатеховая кислота
3
10Serbo-Croatian (sh)
Protokatehuinska kiselina
2
More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

The highest AI in June 2025

Language versions of the article "Protocatechuic acid" with the highest AI in June 2025
#LanguageAI awardRelative AI
1German (de)
Protocatechusäure
0
2English (en)
Protocatechuic acid
0
3Esperanto (eo)
3,4-Duhidroksobenzoata acido
0
4Persian (fa)
پروتوکاتکویک اسید
0
5French (fr)
Acide protocatéchique
0
6Italian (it)
Acido protocatecuico
0
7Japanese (ja)
プロトカテク酸
0
8Polish (pl)
Kwas protokatechowy
0
9Portuguese (pt)
Ácido protocatecuico
0
10Romanian (ro)
Acid protocatecuic
0
More...

The following table shows the language versions of the article with the highest number of citations.

The highest CI

Language versions of the article "Protocatechuic acid" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1Italian (it)
Acido protocatecuico
380
2English (en)
Protocatechuic acid
100
3Chinese (zh)
原儿茶酸
43
4Persian (fa)
پروتوکاتکویک اسید
35
5French (fr)
Acide protocatéchique
28
6German (de)
Protocatechusäure
22
7Japanese (ja)
プロトカテク酸
22
8Russian (ru)
Протокатеховая кислота
22
9Portuguese (pt)
Ácido protocatecuico
11
10Polish (pl)
Kwas protokatechowy
9
More...

Scores

Estimated value for Wikipedia:
English:
Global:
Popularity in June 2025:
English:
Global:
Popularity in all years:
English:
Global:
Authors in June 2025:
English:
Global:
Registered authors in all years:
English:
Global:
Citations:
English:
Global:

Quality measures

Interwikis

#LanguageValue
deGerman
Protocatechusäure
enEnglish
Protocatechuic acid
eoEsperanto
3,4-Duhidroksobenzoata acido
faPersian
پروتوکاتکویک اسید
frFrench
Acide protocatéchique
itItalian
Acido protocatecuico
jaJapanese
プロトカテク酸
plPolish
Kwas protokatechowy
ptPortuguese
Ácido protocatecuico
roRomanian
Acid protocatecuic
ruRussian
Протокатеховая кислота
shSerbo-Croatian
Protokatehuinska kiselina
srSerbian
Protokatehuinska kiselina
zhChinese
原儿茶酸

Popularity rank trends

Best Rank English:
#419070
06.2014
Global:
#499596
04.2015

AI rank trends

Best Rank English:
#94588
04.2012
Global:
#144486
08.2011

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on 3,4-dihydroxybenzoic acid from Wikipedia articles about Terephthalic acid, Dihydroxybenzoic acid, Hibiscus sabdariffa, Phenolic acid and Protocatechuate 3,4-dioxygenase. Whereas reading the article about 3,4-dihydroxybenzoic acid people most often go to Wikipedia articles on Vanillin, Dihydroxybenzoic acid, Ethyl protocatechuate, Boswellia dalzielii and Terephthalic acid.

Cumulative results of quality and popularity of the Wikipedia article

List of Wikipedia articles in different languages (starting with the most popular):

News from 10 February 2026

On 10 February 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: Jeffrey Epstein, Ghislaine Maxwell, Ilia Malinin, Bad Bunny, 2026 Winter Olympics, Epstein files, Jutta Leerdam, Jake Paul, Puerto Rico, Little Saint James.

In English Wikipedia the most popular articles on that day were: Bad Bunny, Jeffrey Epstein, Epstein files, Ilia Malinin, Savannah Guthrie, Ghislaine Maxwell, 2026 Winter Olympics, List of Super Bowl halftime shows, Eileen Gu, Jutta Leerdam.

About WikiRank

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information