User talk:Yikrazuul

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Dear Yikrazuul,[edit]

there is a mistake in your graphical presentation of the Calvin cycle in the German version of the C3-Pflanzen entry. It should be "3x Ribulose-1,5-biphosphat" instead of "6x...". — Preceding unsigned comment was added by 158.169.150.9 (talk) 14:11, 07 July 2016 (UTC)[reply]

Merci[edit]

Merci pour le schéma du fonctionnement du complexe pyruvate déshydrogenase — Preceding unsigned comment was added by an unspecified IP address (talk) 154.104.242.4 (UTC)

Wikipedia 'List of cocaine analogues' article images needed[edit]

Hello,

I notice you make a lot of molecular structure 2D images. I am currently restricted to a library computer and cannot make images for upload.

I was wondering if you could assist me in my endeavor of adding certain images for inclusion at the Wikipedia 'List of cocaine analogues' page.

What I need is mostly those from Singh's SAR of Cocaine paper (45 pages in on the page finder; pg. 970 or so as enumerated on the paper itself: the chemical structures 183a-(through)-d, 184a & b, 185a-d, 186-188 on 'Scheme 42', on pg. 50 (974) structures 196a-o, 197a-g, 198a-e, 199a & b, 200 & 201a-e ... and more down to page 61 or so; namely N-modified analogs & such.)

Any help making these would be greatly appreciated. Nagelfar (talk) 21:44, 24 February 2015 (UTC)[reply]

Deine Grafik zur Dische-Probe[edit]

Hallo Yikrazuul, hast Du irgendwelche Quellen zu Deiner Reaktionsgleichung der Dische-Probe? Ich kann nämlich, so sehr ich auch das Netz durchforste, nix diese Gleichung Bestätigendes finden. In einem Biochemie-Skript der TU Freiberg [1] findet sich dann nochmal eine etwas andere Gleichung der Dische-Probe, also mit etwas anderem Aufbau des farbgebenden Moleküls, auch die über Furfural als Zwischenstufe, doch auch die ohne irgendwelche Belege.

Aktuelle Lehrmeinung scheint vielmehr zu sein, dass die Dische-Probe in Wirklichkeit über eine Ringspaltung des Desoxyzuckers zum offenkettigen ω-Hydroxy-Lävulinaldehyd verläuft, das dann im zweiten Schritt mit dem Diphenylamin den gesuchten blauen Farbstoff ergibt (wobei dessen genauer Aufbau wohl auch noch nicht wirklich geklärt ist, vgl. u.a. [2]).

Deine Grafik scheint also, es sei denn, Du hast irgendwelche stichhaltigen Belege in der Hinterhand, leider falsch zu sein (was in dem auf der Wikipedia-Seite unten verlinkten Biochemie-Skript der Ruhr-Uni Bochum übrigens nochmal bestätigt, also auch da ω-Hydroxy-Lävulinaldehyd und nicht Furfural als das Zwischenprodukt der Farbstoffbildung genannt wird).

Problem ist halt, dass zur Struktur dieses blauen Farbstoffs nix Genaues bekannt ist, Du Deine Grafik also auch nicht wirklich aktualisieren kannst, oder? Gruß --Qniemiec (talk) 12:24, 18 April 2015 (UTC)[reply]

Ich vermute, dass die Gleichung einer inzwischen nicht mehr existierenden Seite entstammt: http://www.chemie.uni-regensburg.de/Organische_Chemie/Didaktik/Keusch/p31_d_rib.htm --JWBE (talk) 11:43, 20 April 2015 (UTC)[reply]
File:Pigmentgrün B.svg has been listed at Commons:Deletion requests so that the community can discuss whether it should be kept or not. We would appreciate it if you could go to voice your opinion about this at its entry.

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DMacks (talk) 03:08, 15 June 2015 (UTC)[reply]

Image of Heliconius sapho[edit]

There is an image of "H. sapho" attributed to you which is really Heliconius hewitsoni, with two yellow bands across the forewing. The two species are close, but not thought to be sister species. There is no evidence that they are conspecific. Heliconius hewitsoni occurs in the Chiriqui region of Panama, and in adjacent areas of SW Costa Rica such as the Osa Peninsula. I think you have it perching on a host plant, which is probably Passiflora pittieri.

Best wishes, eratosignis [[3]]

Haem B[edit]

The Fe(II) is in oxidation state number two yet it is bonded to four nitrogens. How is this the case and what does the dashed lines mean?

Also how is the iron pentavalent instead of tetravalent?

Structure problems[edit]

In File:Hoechst 33342.svg, the lower N on the third ring (counted left-to-right) is missing an H. But overall, the image has "3HCl", but these H+ are more correctly located on specific N in the structure. DMacks (talk) 20:57, 4 September 2015 (UTC)[reply]

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DMacks (talk) 21:58, 11 November 2015 (UTC)[reply]

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Leyo 00:34, 24 December 2015 (UTC)[reply]

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Kopiersperre (talk) 18:36, 6 April 2016 (UTC)[reply]

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Leyo 19:03, 11 October 2016 (UTC)[reply]

Your VFC installation method is deprecated[edit]

Hello Yikrazuul, we are aware that using the old installation method of VFC (via common.js, which you are using) may not work reliably anymore and can break other scripts as well. A detailed explanation can be found here. Important: To prevent problems please remove the old VFC installation code from your common.js and instead enable the VFC gadget in your preferences. Thanks! --VFC devs (q) 16:23, 22 May 2017 (UTC)[reply]

dihydrohelenalin[edit]

wrong structure (should be CH3 instead of H) — Preceding unsigned comment was added by 132.230.195.91 (talk) 09:13, 1 March 2018 (UTC)[reply]

Atractyloside images[edit]

Hi Yikrazuul. Can you please have a look at File:Atractyloside.svg and File:Atractyloside general.svg? I think there is a methyl group misplaced in each. The ester group should be 3-methylbutyrate, not 2-methylbutyrate. Ed (Edgar181) 12:41, 30 September 2018 (UTC)[reply]

Yikrazuul has been inactive since December 2014. Just go ahead and upload corrected versions under the same names. --Leyo 09:12, 2 October 2018 (UTC)[reply]
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Wostr (talk) 15:44, 14 November 2018 (UTC)[reply]

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Leyo 14:27, 7 January 2019 (UTC)[reply]

Important message for file movers[edit]

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File:Chlorophyll c1.png has been listed at Commons:Deletion requests so that the community can discuss whether it should be kept or not. We would appreciate it if you could go to voice your opinion about this at its entry.

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DMacks (talk) 12:27, 29 November 2019 (UTC)[reply]

Hallo Yikrazuul,[edit]

ich glaube bei deiner Grafik zur Wirkungsweise von Paraquat ist dir ein Lapsus unterlaufen. Von meinem Verständnis ausgehend sollte der Reaktionspfeil bei der Interaktion des Paraquatradikals mit Sauerstoff vom Paraquatradikal zum Paraquatkation führen. — Preceding unsigned comment added by Der Christian 123 (talk • contribs) 16:23, 31 January 2020 (UTC)[reply]

Ist korrigiert. --NadirSH (talk) 14:28, 23 February 2020 (UTC)[reply]
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NedFausa (talk) 23:21, 5 February 2020 (UTC)[reply]


The factual accuracy of the chemical structure File:3-O-caffeoylshikimic acid.svg is disputed[edit]

Dispute notification The chemical structure File:3-O-caffeoylshikimic acid.svg you uploaded has been tagged as disputed and is now listed in Category:Disputed chemical diagrams. Files in this category are deleted after one month if there is no upload of a corrected version and if there is no objection from the uploader or other users. Please discuss on the file talk page if you feel that the dispute is inappropriate. If you agree with the dispute, you can either upload a corrected version or simply allow the file to be deleted.

In all cases, please do not take the dispute personally. It is never intended as such. Thank you! --Mykhal (talk) 16:44, 2 July 2020 (UTC)[reply]


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Chem Sim 2001 (disc) 06:54, 16 July 2020 (UTC)[reply]

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Chem Sim 2001 (disc) 21:36, 22 July 2020 (UTC)[reply]

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DMacks (talk) 22:53, 30 August 2020 (UTC)[reply]

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Elliot321 (talk) 05:06, 17 February 2021 (UTC)[reply]

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Innerstream (talk) 01:32, 17 July 2021 (UTC)[reply]

Data source(s) for Photosynthese_CO2-Konzentration.svg[edit]

Hi Yikrazuul, can you please tell me what sources you used for data in this excellent graph?

https://de.wikipedia.org/wiki/Photosynthese#/media/Datei:Photosynthese_CO2-Konzentration.svg

(I am sorry that this is in English rather than German, since I do not understand German.) Thank you, NCdave (talk) 23:24, 13 October 2021 (UTC)[reply]

Commons:Deletion requests[edit]

Commons:Deletion requests/File:Micropnis.png: Subido de nuevo o es otro archivo innecesario. No es usado. Alguién solamente puso la foto de su organo y ciao. No se le puede considerar un usuario de verdad. — Preceding unsigned comment was added by 191.119.58.34 (talk) 01:54, 18 February 2022 (UTC)[reply]

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Chem Sim 2001 (talk) 10:11, 23 March 2022 (UTC)[reply]

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Innerstream (talk) 14:32, 24 November 2022 (UTC)[reply]

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Alhadis (talk) 19:15, 3 August 2023 (UTC)[reply]

Notification about possible deletion[edit]

Some contents have been listed at Commons:Deletion requests so that the community can discuss whether they should be kept or not. We would appreciate it if you could go to voice your opinion about this at their entry.

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Chem Sim 2001 (talk) 18:38, 21 December 2023 (UTC)[reply]

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Alhadis (talk) 12:40, 21 February 2024 (UTC)[reply]