S-Adenosyl L-methionine | 29908-03-0
Product Description:
S-adenosylmethionine was first discovered by scientists (Cantoni) in 1952.
It is synthesized by adenosine triphosphate (ATP) and methionine in cells by methionine adenosyl transferase (Methionine Adenosyl Transferase), and when it participates in the methyl transfer reaction as a coenzyme, it loses a methyl group and decomposes it into S-adenosyl group Histidine.
Technical indicators of L-Cysteine 99%:
Analysis Item Specification
Appearance White to off-white Powder
Water Content (K.F) 3.0% MAX
Sulphated Ash 0.5% MAX.
PH (5% AQUEOUS SOLUTION) 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%
Content of Sulfate (SO4) (HPLC) 23.5%–26.5%
Disulfate Tosylate 95.0%–103%
Related substances (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.
Heavy metals Not more than 10 ppm
Lead Not more than 3 ppm
Cadmium Not more than 1 ppm
Mercury Not more than 0.1 ppm
Arsenic Not more than 2 ppm
Microbiology
Total Aerobic Count ≤1000cfu/g
Yeast and mold count ≤100cfu/g
E. coli Absent/10g
S. aureus Absent/10g
Salmonella Absent/10g
