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.
26 products
![[metabolites] 2-Carboxy-1-methyl-ethylmercapturic acid](https://www.alsachim.com/20142-list_image/2-Carboxy-1-methyl-ethylmercapturic-acid.jpg)
2-Carboxy-1-methyl-ethylmercapturic acid
Product Number: C276
CAS number: 33164-65-7
Synonyms: CMEMA
![[reference-standards] 1-alpha,25-Dihydroxyvitamin D2](https://www.alsachim.com/17541-list_image/1-alpha-25-Dihydroxyvitamin-D2.jpg)
1-alpha,25-Dihydroxyvitamin D2
Product Number: C1155
CAS number: 60133-18-8
Synonyms: 1-alpha,25-Dihydroxycalciferol
![[reference-standards] Paricalcitol](https://www.alsachim.com/17540-list_image/Paricalcitol.jpg)
Paricalcitol
Product Number: C1154
CAS number: 131918-61-1
Synonyms: 19-Nor-1,25-dihydroxyvitamin D2
![[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