CYTIDINE

Formula:

C₉H₁₃N₃O₅

Mol.weight:

243.22

CAS No.:

[65-46-3]

EINECS No.:

200-610-9

Description:

White crystalline powder

Clarity&color of solution:

Colorless and clear

Identification:

Conforms to the ref. IR spectrum

Purity(HPLC):

99.0%min.(area percent)

Assay(UV absorption):

98.0%～102.0%(on dry basis)

Ratios(abs.max.280nm,

A250/A260=0.41～0.49

ε=13,000±2%,PH1):

A280/A260=2.05～2.15

Specific rotation:

Transparency:

98.0%min.(430nm, C=1,w/v, in H₂O)

Melting point:

210℃～217℃

Loss on drying:

0.5%max.(at 105℃/5h.)

Residue on ignition:

0.1%max.

Heavy metals(as Pb):

10ppm max.

Arsenic(AS2O3):

1ppm max.