n-acetyl-tyrosine 537-55-3

payment method: t/t
ac-tyr
product name: ac-tyr-oh cas #: 537-55-3
synonyms: n-acetyl-l-tyrosine molecular formula: c11h13no4
molecular weight: 223.23

specifications: (reference standard : aji92)
items
standard
analysis data

appearance
white crystal or white crystalline powder
conforms

specific rotation [20/d]
(c=2 in h2o)
+45 to +49 degree
46.2°

transmittance
not less than 95.0%
96.5%

heavy metals (pb)
not more than 10 ppm
<10ppm

arsenic (as2o3)
not more than 2 ppm
<2ppm

loss on drying
not more than 0.50%
0.25%

residue on ignition
not more than 0.30%
0.1%

assay
98.0 to 102.0%
99.2%

ph
2.0 to 3.0
2.3

537-55-3