L-CYSTEINE

L-CYSTEINE For Biochemistry

(R)-2-Amino-3-mercaptopropionic acid

Article No.

03140

Grade

For Biochemistry

Purity

99%

CAS No.

52-90-4

Molecular Formula

C₃H₇NO₂S

Molecular Weight

121.16

H.S. Code

2930.9040

Shelf Life

60 Months

MSDS

Certificate of Analysis (COAs)

Physical state at 20 °C

Solid

Colour

Colorless crystalline

Melting point/ Freezing point [°C]

220 °C

Solubility in water [% weight]

Appreciable (> 10%)

Appearance	Colorless crystalline powder
Assay	Min. 99%
Specific optical rotation ([α]20/D)	+8.0° to +9.0°
UV absorbance	Max. 0.5
Loss on drying (at 105°C; 4 hrs)	Max. 0.3%
Chloride (Cl)	Max. 0.002%
Sulphate (SO4)	Max. 0.01%
Heavy metal (as Pb)	Max. 0.001%
Ammonium (NH4)	Max. 0.01%
Foreign amino acids	Max. 0.5%
Other ninhydrin positive substances (as glycine)	Max. 0.1%

Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H302

Revision Date : 15-Jan-2015