Batch No.

20180519

Mfg.Date

MAY.19.2018

Analysis.Date

MAY.23.2018

Quantity

85g

CAS

79561-22-1

Exp.Date

MAY.18.2020

Sequence

Glp-His-Trp-Ser-Tyr-D-Ala-Leu-Arg-Pro-NHEt

Storage

Store at 25 degree for transportation ,Store at 2~8 degree long term storage  

Appearance

White or off-White powder

Complies

Solubility

Sparingly soluble in MeOH ,soluble in water and  1% acetate acid

Complies

Specific Optical Rotation

-46.0°~-56.0°

(C=0.5%;1% acetate acid-anhydrous and acetic acid  free subtance)

-53.8°

Related Substances

Unspecified impurity for each impurity≤1.0%

0.8%

(Single largest impurity)

Total impurity≤2.0%

1.23%

Water Content

≤5.0%

3.2%

Acetic acid Content

≤7.5%

6.9%

MS

1167.31±1.0

1166.8

Bacterial Endotoxins

≤5.0 IU/mg

Complies

Amino Acid Analysis

Arg  0.9~1.1

Arg  1.0

His  0.9~1.1

His  0.9

Leu  0.9~1.1

Leu  1.0

Ala  0.9~1.1

Ala   1.0

Pro  0.8~1.0

Pro   1.0

Tyr  0.9~1.1

Tyr   1.1

Glu  0.9~1.1

Glu   1.1

Ser  0.7~1.0

Ser   0.9

No more than the traces of other amino acids are present

Complies

Residual Solvent

Methanol≤3000 ppm

100ppm

Acetonitrile≤410 ppm

206ppm

Triethylamine≤320 ppm

15ppm

Trifluoroacetic acid≤420 ppm

105ppm

Assay

95.0%~103.0%

(Anhydrous and acetic acid free substance )

1002.0%