![[reference-standards] Mesalamine](https://www.alsachim.com/15022-list_image/Mesalamine.jpg)
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.
10 products
![[reference-standards] Mesalamine hydrochloride salt](https://www.alsachim.com/18980-list_image/Mesalamine-hydrochloride-salt.jpg)
Mesalamine hydrochloride salt
Product Number: C5498
CAS number: 6291-36-7
Synonyms: Mesalazine hydrochloride, 5-Aminosalicylic acid
![[reference-standards] Aspirin](https://www.alsachim.com/16999-list_image/Aspirin.jpg)
![[reference-standards] Vitamin A](https://www.alsachim.com/16396-list_image/Vitamin-A.jpg)
![[metabolites] 13-cis-Retinoic acid](https://www.alsachim.com/15615-list_image/13-cis-Retinoic-acid.jpg)
![[metabolites] 4-Keto 13-cis-retinoic acid](https://www.alsachim.com/15617-list_image/4-Keto-13-cis-retinoic-acid.jpg)
4-Keto 13-cis-retinoic acid
Product Number: C3165
CAS number: 71748-58-8
Synonyms: 4-Oxo-13-cis-retinoic Acid, 4-Oxo-isotretinoin
![[metabolites] 9-cis-Retinoic acid](https://www.alsachim.com/15618-list_image/9-cis-Retinoic-acid.jpg)
9-cis-Retinoic acid
Product Number: C3167
CAS number: 5300-03-8
Synonyms: Alitretinoin, Panretin, 9-cis-Tretinoin, Panrexin
![[metabolites] all-trans-Retinoic acid](https://www.alsachim.com/15622-list_image/all-trans-Retinoic-acid.jpg)
all-trans-Retinoic acid
Product Number: C3171
CAS number: 302-79-4
Synonyms: Tretinoin, Vitamin A acid
![[reference-standards] Salicylic acid](https://www.alsachim.com/15030-list_image/Salicylic-acid.jpg)
![[metabolites] 9-cis,13-cis-Retinoic acid](https://www.alsachim.com/14926-list_image/9-cis-13-cis-Retinoic-acid.jpg)
9-cis,13-cis-Retinoic acid
Product Number: C3315
CAS number: 5352-74-9
Synonyms: 9,13-Di-cis-retinoic acid, (9-cis,13-cis)-Retinoic acid