![[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.
24 products
![[metabolites] 1-Hydroxymidazolam β-D-glucuronide](https://www.alsachim.com/14870-list_image/1-Hydroxymidazolam-beta-D-glucuronide.jpg)
1-Hydroxymidazolam β-D-glucuronide
Product Number: C1243
CAS number: 81256-81-7
Synonyms: 1-Hydroxymidazolam beta-D-glucuronide
![[metabolites] 1-Hydroxymidazolam](https://www.alsachim.com/15717-list_image/1-Hydroxymidazolam.jpg)
![[metabolites] 4-Hydroxymidazolam](https://www.alsachim.com/16655-list_image/4-Hydroxymidazolam.jpg)
![[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] (S)-Pramipexole dihydrochloride salt](https://www.alsachim.com/20090-list_image/-S-Pramipexole-dihydrochloride-salt.jpg)
![[reference-standards] L-DOPA](https://www.alsachim.com/19897-list_image/L-DOPA.jpg)
![[reference-standards] Thymol sulfate ammonium salt](https://www.alsachim.com/19850-list_image/Thymol-sulfate-ammonium-salt.jpg)
![[reference-standards] Brexpiprazole](https://www.alsachim.com/19819-list_image/Brexpiprazole.jpg)
![[metabolites] 3,4-Dihydroxyphenylacetic acid](https://www.alsachim.com/14294-list_image/3-4-Dihydroxyphenylacetic-acid.jpg)
3,4-Dihydroxyphenylacetic acid
Product Number: C10469
CAS number: 102-32-9
Synonyms: DOPAC, Homoprotocatechuic acid
![[reference-standards] Tofisopam](https://www.alsachim.com/18892-list_image/Tofisopam.jpg)
![[reference-standards] Olanzapine N-oxide](https://www.alsachim.com/18601-list_image/Olanzapine-N-oxide.jpg)
![[reference-standards] Carpipramine](https://www.alsachim.com/18124-list_image/Carpipramine.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] Ropinirole hydrochloride salt](https://www.alsachim.com/17641-list_image/Ropinirole-hydrochloride-salt.jpg)
![[metabolites] 7-Hydroxycoumarin sulfate ammonium salt](https://www.alsachim.com/16577-list_image/7-Hydroxycoumarin-sulfate-ammonium-salt.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
![[reference-standards] Rotigotine hydrochloride salt](https://www.alsachim.com/15737-list_image/Rotigotine-hydrochloride-salt.jpg)