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779539

L-Cystine

Name: <SC>L</SC>-Cystine
Brand: ALDRICH

Wacker Chemie AG, ≥98.5%

Synonym(s):

(R,R)-3,3′-Dithiobis(2-aminopropionic acid)

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About This Item

Linear Formula:

[-SCH₂CH(NH₂)CO₂H]₂

CAS Number:

56-89-3

Molecular Weight:

240.30

UNSPSC Code:

12352209

NACRES:

NA.22

PubChem Substance ID:

329768048

EC Number:

200-296-3

Beilstein/REAXYS Number:

1728094

MDL number:

MFCD00064228

Assay:

≥98.5%

Form:

powder

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Properties

Quality Level

200

assay

≥98.5%

form

powder

optical activity

[α]/D -224 to -218°

reaction suitability

reaction type: solution phase peptide synthesis

manufacturer/tradename

Wacker Chemie AG

impurities

≤0.02% ammonium, ≤0.2% ninhidrin positive substances (each), ≤10 ppm heavy metals

ign. residue

≤0.1%

loss

≤0.2% loss on drying

mp

>240 °C (dec.) (lit.)

anion traces

chloride (Cl^-): ≤200 ppm, sulfate (SO₄^2-): ≤300 ppm

cation traces

As: ≤1 ppm, Fe: ≤10 ppm, Pb: ≤5 ppm

suitability

clear, colorless for appearance of solution

SMILES string

N[C@@H](CSSC[C@H](N)C(O)=O)C(O)=O

InChI

1S/C6H12N2O4S2/c7-3(5(9)10)1-13-14-2-4(8)6(11)12/h3-4H,1-2,7-8H2,(H,9,10)(H,11,12)/t3-,4-/m0/s1

InChI key

LEVWYRKDKASIDU-IMJSIDKUSA-N

Description

General description

L-Cystine is an amino acid mainly found in the keratin of hair.

This product is supplied from Wacker FERMOPURE^® material, but is sold for R&D use only, not for drug, household or other uses.

Application

L-Cystine can be used as a starting material for the synthesis of d-biotin, aromatic-bridged cystine cyclic peptides (cystinophanes), chiral imidazolidine disulfides and biodegradable PEGylated gadolinium-diethylenetriamine pentaacetic acid (Gd-DTPA) L-cystine copolymers.

Legal Information

FERMOPURE is a registered trademark of Wacker Chemie AG

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Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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PEG-g-poly (GdDTPA-co-L-cystine): a biodegradable macromolecular blood pool contrast agent for MR imaging.

Mohs A M, et al.

Bioconjugate Chemistry, 15(6), 1424-1430 (2004)

Cystinophanes, a novel family of aromatic-bridged cystine cyclic peptides: synthesis, crystal structure, molecular recognition, and conformational studies.

Ranganathan D, et al.

Journal of the American Chemical Society, 120(12), 2695-2702 (1998)

L-Cystine

Gortner RA and Hoffman WF

Organic Syntheses, 5, 39-39 (1925)

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Global Trade Item Number

SKU	GTIN
779539-100G	04061838351937
779539-1KG	04061826681060
779539-25KG	04061833367575

Key Documents

L-Cystine

Wacker Chemie AG, ≥98.5%

Select a Size

About This Item

Quality Level

assay

form

optical activity

reaction suitability

manufacturer/tradename

impurities

ign. residue

loss

mp

anion traces

cation traces

suitability

SMILES string

InChI

InChI key

General description

Application

Legal Information

Still not finding the right product?

Safety Information

Storage Class

wgk

flash_point_f

flash_point_c

Documentation

Certificates of Analysis (COA)

Already Own This Product?

Peer Reviewed Papers

Global Trade Item Number