Name

L-Cysteine

CAS No.

52-90-4

EINECS NO.

200-158-2

Molecular formula

C₃H₇NO₂S

Molecular weight

121.15

Structural formula

Physical and Chemical Properties

Melting point220°C；

Specific Rotation 8.75° (c=12,2n hcl)；

water-soluble 280 g/l(25°C)