中国
岛津（上海）实验器材有限公司
[13C, 2H3]-5-Methyltetrahydrofolic acid
[13C6]-Tetrahydrofolic acid
[13C5]-Tetrahydrofolic acid
[U-ring-13C6]-Salicylate sodium salt
![[13C, 2H3]-5-Methyltetrahydrofolic acid](https://www.shimadzu-sglc.com/sites/default/files/productimg/50/5001/5001013/5001013011/C5603-1mg_01.jpg)
![[13C6]-Tetrahydrofolic acid](https://www.shimadzu-sglc.com/sites/default/files/productimg/50/5001/5001013/5001013007/C5596-1mg_01.jpg)
![[13C5]-Tetrahydrofolic acid](https://www.shimadzu-sglc.com/sites/default/files/productimg/50/5001/5001013/5001013012/C5604-1mg_01.jpg)
![[U-ring-13C6]-Salicylate sodium salt](https://www.shimadzu-sglc.com/sites/default/files/productimg/50/5001/5001013/5001013013/C5619-1mg_01.jpg)