![[reference-standards] Vitamine K2](https://www.alsachim.com/19349-list_image/Vitamine-K2.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.
45 products
![[reference-standards] Vitamin K1](https://www.alsachim.com/18064-list_image/Vitamin-K1.jpg)
![[reference-standards] Vitamin D2](https://www.alsachim.com/17817-list_image/Vitamin-D2.jpg)
![[reference-standards] Vitamin A](https://www.alsachim.com/16396-list_image/Vitamin-A.jpg)
![[reference-standards] Thionicotinamide adenine dinucleotide](https://www.alsachim.com/20146-list_image/Thionicotinamide-adenine-dinucleotide.jpg)
Thionicotinamide adenine dinucleotide
Product Number: C5918
CAS number: 4090-29-3
Synonyms: Thionicotinamide-NAD, Thionicotinamide-DPN
![[reference-standards] Secalciferol](https://www.alsachim.com/21161-list_image/Secalciferol.jpg)
![[reference-standards] Quinmerac](https://www.alsachim.com/20038-list_image/Quinmerac.jpg)
![[metabolites] Prosulfocarb sulfoxide](https://www.alsachim.com/21144-list_image/Prosulfocarb-sulfoxide.jpg)
![[reference-standards] Prosulfocarb](https://www.alsachim.com/21142-list_image/Prosulfocarb.jpg)
![[reference-standards] Propisochlor](https://www.alsachim.com/17362-list_image/Propisochlor.jpg)
![[reference-standards] Picloram](https://www.alsachim.com/20039-list_image/Picloram.jpg)
![[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
![[reference-standards] Oxadiazon](https://www.alsachim.com/19695-list_image/Oxadiazon.jpg)
![[reference-standards] Nicotinamide](https://www.alsachim.com/15762-list_image/Nicotinamide.jpg)
![[reference-standards] Monuron](https://www.alsachim.com/16552-list_image/Monuron.jpg)
![[metabolites] Metazachlor OXA](https://www.alsachim.com/19476-list_image/Metazachlor-OXA.jpg)
![[reference-standards] Metazachlor ESA](https://www.alsachim.com/19799-list_image/Metazachlor-ESA.jpg)
![[reference-standards] Metazachlor](https://www.alsachim.com/19752-list_image/Metazachlor.jpg)
![[reference-standards] Levomefolate calcium salt](https://www.alsachim.com/16836-list_image/Levomefolate-calcium-salt.jpg)
Levomefolate calcium salt
Product Number: C6234
CAS number: 151533-22-1
Synonyms: LMCA, Metafolin, 5-Methyl-tetrahydrofolate calcium salt, L-Methylfolate calcium salt
![[reference-standards] Isoproturon](https://www.alsachim.com/19456-list_image/Isoproturon.jpg)
Isoproturon
Product Number: C6241
CAS number: 34123-59-6
Synonyms: 3-(4-Isopropylphenyl)-1,1-dimethylurea