PHR1323

Supelco

L-Cystine

Pharmaceutical Secondary Standard; Certified Reference Material

Sinónimos:
(R,R)-3,3′-Dithiobis(2-aminopropionicacid), L-Cystine
Fórmula lineal:
[-SCH2CH(NH2)CO2H]2
Número de CAS:
Peso molecular:
240.30
Beilstein/REAXYS Number:
1728094
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.24

Quality Level

grade

certified reference material
pharmaceutical secondary standard

CofA

current certificate can be downloaded

application(s)

HPLC: suitable
gas chromatography (GC): suitable

mp

>240 °C (dec.) (lit.)

Featured Industry

Pharmaceutical (small molecule)

format

neat

pharmacopeia traceability

traceable to PhEur C3300000
traceable to USP 1161586

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

¿Está buscando productos similares? Visit Guía de comparación de productos

General description

L-Cysteine a sulfur-containing, proteingenic non-essential amino acid useful in numerous biological applications.
Pharmaceutical secondary standards for application in quality control, provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards.

Application

These Secondary Standards are qualified as Certified Reference Materials. These are suitable for use in several analytical applications including but not limited to pharma release testing, pharma method development for qualitative and quantitative analyses, food and beverage quality control testing, and other calibration requirements.
L-Cysteine may be used as a pharmaceutical reference standard for the quantification of the analyte in pharmaceutical formulations by chromatography.

Analysis Note

These secondary standards offer multi-traceability to the USP, EP (PhEur) and BP primary standards, where they are available.

Other Notes

This Certified Reference Material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis.

Footnote

To see an example of a Certificate of Analysis for this material enter LRAC3784 in the slot below. This is an example certificate only and may not be the lot that you receive.

storage_class_code

13 - Non Combustible Solids

WGK Germany

WGK 1

Flash Point F

Not applicable

Flash Point C

Not applicable

Certificado de Análisis

Certificado de origen

Simultaneous identification and determination of total content of aminoacids in food supplements-tablets by gas chromatography
Obreshkova DP, et al.
Asian journal of experimental biological sciences, 5, 57-68 (2012)
l-Cysteine
Nonvitamin and Nonmineral Nutritional Supplements, 59(11), 53-58 (2019)
Determination of cysteine in pharmaceuticals via liquid chromatography with postcolumn derivatization
Jenke DR and Brown DS
Analytical Chemistry, 59(11), 1509-1512 (1987)
Quantitative analysis of N-acetylcysteine and its pharmacopeial impurities in a pharmaceutical formulation by liquid chromatography-UV detection-mass spectrometry.
Toussaint B,
Journal of Chromatography A, 896(1-2), 191-199 (2000)
Young-Mi Go et al.
Free radical biology & medicine, 50(4), 495-509 (2010-12-07)
Extracellular thiol/disulfide redox environments are highly regulated in healthy individuals. The major thiol/disulfide redox couple in human plasma is cysteine (Cys) and its disulfide form, cystine (CySS). Oxidation of this redox couple, measured as a more positive steady-state redox potential...
Protocolos
Separation of L-Alanine; Glycine; L-Valine; L-Leucine; L-Isoleucine; L-Proline; L-Methionine; L-Serine; L-Threonine; L-Phenylalanine; L-Aspartic acid; L-4-Hydroxyproline; L-Cysteine; L-Glutamic acid; L-Asparagine; L-Lysine; L-Glutamine; L-Histidine; L-Tyrosine; L-Tryptophan; L-Cystine
Más información

Nuestro equipo de científicos tiene experiencia en todas las áreas de investigación: Ciencias de la vida, Ciencia de los materiales, Síntesis química, Cromatografía, Analítica y muchas otras.

Póngase en contacto con el Servicio técnico