![[reference-standards] 7-(-β-Hydroxyethyl)theophylline](https://www.alsachim.com/20114-list_image/7--beta-Hydroxyethyl-theophylline.jpg)
7-(-β-Hydroxyethyl)theophylline
Product Number: C8001
CAS number: 519-37-9
Synonyms: 7-(-beta-Hydroxyethyl)theophylline
Reference standards
The wide portfolio of Alsachim's reference standards covers a broad range of applications: pharmaceutical, environmental analysis, food and beverages, doping, toxicology and forensic analysis.
31 products
![[reference-standards] Isoliquiritigenin](https://www.alsachim.com/20161-list_image/Isoliquiritigenin.jpg)
Isoliquiritigenin
Product Number: C6247
CAS number: 961-29-5
Synonyms: (E)-1-(2,4-Dihydroxyphenyl)-3-(4-hydroxyphenyl)prop-2-en-1-one
![[reference-standards] Thiothixene](https://www.alsachim.com/19853-list_image/Thiothixene.jpg)
![[reference-standards] Thymol sulfate ammonium salt](https://www.alsachim.com/19850-list_image/Thymol-sulfate-ammonium-salt.jpg)
![[reference-standards] Myricetin](https://www.alsachim.com/17879-list_image/Myricetin.jpg)
![[reference-standards] 5-Hydroxymethylfurfuraldehyde](https://www.alsachim.com/17740-list_image/5-Hydroxymethylfurfuraldehyde.jpg)
![[reference-standards] Zuclopenthixol dihydrochloride salt](https://www.alsachim.com/16839-list_image/Zuclopenthixol-dihydrochloride-salt.jpg)
![[reference-standards] Bestatin](https://www.alsachim.com/16788-list_image/Bestatin.jpg)
![[reference-standards] Cobicistat](https://www.alsachim.com/16717-list_image/Cobicistat.jpg)
![[metabolites] 7-Hydroxycoumarin sulfate ammonium salt](https://www.alsachim.com/16577-list_image/7-Hydroxycoumarin-sulfate-ammonium-salt.jpg)
![[metabolites] Des-3-pyridylmethyl indinavir](https://www.alsachim.com/16546-list_image/Des-3-pyridylmethyl-indinavir.jpg)
![[reference-standards] Ritonavir A-86093 internal standard](https://www.alsachim.com/16507-list_image/Ritonavir-A-86093-internal-standard.jpg)
![[metabolites] L-Carnitine inner salt](https://www.alsachim.com/16369-list_image/L-Carnitine-inner-salt.jpg)
![[metabolites] 7-Hydroxycoumarin-β-D-glucuronide](https://www.alsachim.com/17507-list_image/7-Hydroxycoumarin-beta-D-glucuronide.jpg)
7-Hydroxycoumarin-β-D-glucuronide
Product Number: C4521
CAS number: 66695-14-5
Synonyms: 7-Hydroxycoumarin-beta-D-glucuronide
![[metabolites] 7-Hydroxycoumarin](https://www.alsachim.com/15681-list_image/7-Hydroxycoumarin.jpg)
7-Hydroxycoumarin
Product Number: C3351
CAS number: 93-35-6
Synonyms: Phase I metabolite of coumarin (CYP2A6), P450 (CYP) metabolite
![[reference-standards] Nelfinavir mesylate salt monohydrate](https://www.alsachim.com/15555-list_image/Nelfinavir-mesylate-salt-monohydrate.jpg)
![[reference-standards] Darunavir hemiethanolate
salt](https://www.alsachim.com/15459-list_image/Darunavir-hemiethanolate-salt.jpg)
![[metabolites] Lopinavir metabolite M-1](https://www.alsachim.com/15457-list_image/Lopinavir-metabolite-M-1.jpg)
![[metabolites] Lopinavir metabolite M-3/M-4](https://www.alsachim.com/15458-list_image/Lopinavir-metabolite-M-3-M-4.jpg)
![[reference-standards] Fosamprenavir calcium salt](https://www.alsachim.com/15376-list_image/Fosamprenavir-calcium-salt.jpg)