S-Adenosyl L-methionine |29908-03-0
Apejuwe ọja:
S-adenosylmethionine jẹ awari akọkọ nipasẹ awọn onimọ-jinlẹ (Cantoni) ni ọdun 1952.
O jẹ iṣelọpọ nipasẹ adenosine triphosphate (ATP) ati methionine ninu awọn sẹẹli nipasẹ methionine adenosyl transferase (Methionine Adenosyl Transferase), ati nigbati o ba ṣe alabapin ninu iṣesi gbigbe methyl bi coenzyme, o padanu ẹgbẹ methyl kan ati pe o decomposes sinu ẹgbẹ S-adenosyl Histidine. .
Awọn itọkasi imọ-ẹrọ ti L-Cysteine 99%:
Itupalẹ Nkan Specification
Irisi White to pa-funfun Powder
Omi akoonu (KF) 3,0% Max
Sulfated Ash 0,5% MAX.
PH (5% OJUTU AQUEOUS) 1.0 -2.0
S, S-Isomer (HPLC) 75.0% MIN
SAM-e ION (HPLC) 49.5 - 54.7%
P-Toluenesulfonic Acid 21.0%-24.0%
Akoonu ti Sulfate (SO4) (HPLC) 23.5%-26.5%
Disulfate Tosylate 95.0%-103%
Awọn nkan ti o jọmọ (HPLC):
- S-adenosyl-l-homocysteine 1.0% Max.
- Adenine 1,0% MAX.
- Methylthioadenosine 1,5% Max
- Adenosine 1.0% MAX.
- Total impurities 3,5% Max.
Awọn irin ti o wuwo Ko ju 10 ppm lọ
Asiwaju Ko siwaju sii ju 3 ppm
Cadmium Ko ju 1 ppm lọ
Makiuri Ko siwaju sii ju 0.1 ppm
Arsenic Ko ju 2 ppm lọ
Microbiology
Lapapọ Iṣiro Aerobic ≤1000cfu/g
Iwukara ati mimu kika ≤100cfu/g
E. coli Ko si / 10g
S. aureus Aisi / 10g
Salmonella Aisi / 10g
