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285463

Sigma-Aldrich

D-Cystine

98%

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Synonym(s):
(S,S)-3,3′-Dithiobis(2-aminopropionic acid)
Linear Formula:
[-SCH2CH(NH2)CO2H]2
CAS Number:
Molecular Weight:
240.30
Beilstein/REAXYS Number:
1728093
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

assay

98%

optical activity

[α]20/D +212°, c = 1 in 1 M HCl

reaction suitability

reaction type: solution phase peptide synthesis

mp

265 °C (dec.) (lit.)

application(s)

peptide synthesis

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-/m1/s1

InChI key

LEVWYRKDKASIDU-QWWZWVQMSA-N

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1 of 4

This Item
A746905129P1101
D-Cystine 98%

285463

D-Cystine

-
L-Alanine from non-animal source, meets EP, USP testing specifications, suitable for cell culture, 98.5-101.0%

A7469

L-Alanine

Premium Grade
L-Alanine BioUltra, ≥99.5% (NT)

05129

L-Alanine

Premium Grade
D-Penicillamine disulfide 97%

P1101

D-Penicillamine disulfide

-
mp

265 °C (dec.) (lit.)

mp

-

mp

314.5 °C

mp

204 °C (dec.) (lit.)

optical activity

[α]20/D +212°, c = 1 in 1 M HCl

optical activity

-

optical activity

[α]20/D +14.0±1.0°, c = 5% in 5 M HCl

optical activity

[α]25/D −75°, c = 1 in 1 M NaOH

reaction suitability

reaction type: solution phase peptide synthesis

reaction suitability

-

reaction suitability

-

reaction suitability

reaction type: solution phase peptide synthesis

application(s)

peptide synthesis

application(s)

peptide synthesis
pharmaceutical (small molecule)

application(s)

detection

application(s)

cell analysis

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


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Novel sophisticated derivatizing agents for the efficient enantioselective separation and mass spectrometric detection of d- and l-amino acids have been developed. Two new axially chiral reagents derived from 6,6'-dimethyl-2,2'-biphenyldiamine were synthesized. Their chiral separation and detection abilities were evaluated by
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The type 1 repeat domain from thrombospondin has potent antiangiogenic activity and a structurally interesting fold, making it an attractive target for protein engineering. Chemical synthesis is an attractive approach for studying protein domains because it enables the use of

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