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.
146 products
![[reference-standards] (-)-Epinephrine](https://www.alsachim.com/15919-list_image/--Epinephrine.jpg)
![[reference-standards] (-)-Epinephrine (+)-bitartrate salt](https://www.alsachim.com/16815-list_image/--Epinephrine---bitartrate-salt.jpg)
(-)-Epinephrine (+)-bitartrate salt
Product Number: C6108
CAS number: 51-42-3
Synonyms: (-)-Adrenalin (+)-bitartrate salt
![[reference-standards] (S)-(+)-Camptothecin](https://www.alsachim.com/19335-list_image/-S---Camptothecin.jpg)
(S)-(+)-Camptothecin
Product Number: C6027
CAS number: 7689-03-4
Synonyms: (S)-4-Ethyl-4-hydroxy-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione
![[reference-standards] (±)-Norepinephrine hydrochloride salt](https://www.alsachim.com/15874-list_image/--Norepinephrine-hydrochloride-salt.jpg)
(±)-Norepinephrine hydrochloride salt
Product Number: C3674
CAS number: 55-27-6
Synonyms: (±)-Noradrenaline hydrochloride salt
![[reference-standards] 11-beta, 17-alpha-Dihydroxy-3-oxoandrost-1,4-diene-17-carboxylic acid](https://www.alsachim.com/19025-list_image/11-beta-17-alpha-Dihydroxy-3-oxoandrost-1-4-diene-17-carboxylic-acid.jpg)
11-beta, 17-alpha-Dihydroxy-3-oxoandrost-1,4-diene-17-carboxylic acid
Product Number: C5585
CAS number: 37927-29-0
Synonyms: Cortienic acid, Prednienic Acid
![[metabolites] 16-Epiestriol](https://www.alsachim.com/17928-list_image/16-Epiestriol.jpg)
16-Epiestriol
Product Number: C2938
CAS number: 547-81-9
Synonyms: 16ß-17ß-Estriol, 16ß-Hydroxyestradiol
![[metabolites] 16-α-Hydroxyestrone](https://www.alsachim.com/17939-list_image/16-alpha-Hydroxyestrone.jpg)
![[metabolites] 17-Alpha-hydroxypregnenolone](https://www.alsachim.com/19704-list_image/17-Alpha-hydroxypregnenolone.jpg)
![[reference-standards] 17-α-Estradiol](https://www.alsachim.com/17916-list_image/17-alpha-Estradiol.jpg)
![[reference-standards] 17-β-Estradiol](https://www.alsachim.com/17915-list_image/17-beta-Estradiol.jpg)
![[reference-standards] 17a-Hydroxyprogesterone Caproate](https://www.alsachim.com/18617-list_image/17a-Hydroxyprogesterone-Caproate.jpg)
![[reference-standards] 18-Hydroxycorticosterone](https://www.alsachim.com/19658-list_image/18-Hydroxycorticosterone.jpg)
![[reference-standards] 2-Hydroxy-17-β-estradiol](https://www.alsachim.com/17918-list_image/2-Hydroxy-17-beta-estradiol.jpg)
2-Hydroxy-17-β-estradiol
Product Number: C2924
CAS number: 362-05-0
Synonyms: 2-Hydroxy-17-beta-estradiol
![[metabolites] 2-Hydroxyestrone](https://www.alsachim.com/17931-list_image/2-Hydroxyestrone.jpg)
![[reference-standards] 2-Methoxy-17-β-estradiol](https://www.alsachim.com/17920-list_image/2-Methoxy-17-beta-estradiol.jpg)
2-Methoxy-17-β-estradiol
Product Number: C2926
CAS number: 362-07-2
Synonyms: 2-Methoxy-17-beta-estradiol
![[metabolites] 2-Methoxyestrone](https://www.alsachim.com/17933-list_image/2-Methoxyestrone.jpg)
![[metabolites] 3,4-Dihydroxyphenylethylene glycol, racemic mixture](https://www.alsachim.com/15487-list_image/3-4-Dihydroxyphenylethylene-glycol-racemic-mixture.jpg)
3,4-Dihydroxyphenylethylene glycol, racemic mixture
Product Number: C3158
CAS number: 28822-73-3
Synonyms: Norepinephrine metabolite, racemic mixture
![[reference-standards] 4-Androsten-11-ß-ol-3,17dione](https://www.alsachim.com/18954-list_image/4-Androsten-11-beta-ol-3-17dione.jpg)
4-Androsten-11-ß-ol-3,17dione
Product Number: C5441
CAS number: 382-44-5
Synonyms: 4-Androsten-11-beta-ol-3,17dione
![[metabolites] 4-Hydroxy-17-β-estradiol](https://www.alsachim.com/17924-list_image/4-Hydroxy-17-beta-estradiol.jpg)
4-Hydroxy-17-β-estradiol
Product Number: C2930
CAS number: 5976-61-4
Synonyms: 4-Hydroxy-17-beta-estradiol
![[metabolites] 4-Hydroxyestrone](https://www.alsachim.com/17935-list_image/4-Hydroxyestrone.jpg)