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Merck

PHR1102

Supelco

L-cisteína hydrochloride monohydrate

Pharmaceutical Secondary Standard; Certified Reference Material

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About This Item

Fórmula lineal:
HSCH2CH(NH2)COOH · HCl · H2O
Número de CAS:
Peso molecular:
175.63
Beilstein/REAXYS Number:
5158059
EC Number:
MDL number:
UNSPSC Code:
41116107
PubChem Substance ID:
NACRES:
NA.24

grade

certified reference material
pharmaceutical secondary standard

Quality Level

agency

traceable to Ph. Eur. C3290000
traceable to USP 1161509

API family

cysteine

CofA

current certificate can be downloaded

technique(s)

HPLC: suitable
gas chromatography (GC): suitable

application(s)

pharmaceutical (small molecule)

format

neat

storage temp.

2-30°C

SMILES string

O.Cl.N[C@@H](CS)C(O)=O

InChI

1S/C3H7NO2S.ClH.H2O/c4-2(1-7)3(5)6;;/h2,7H,1,4H2,(H,5,6);1H;1H2/t2-;;/m0../s1

InChI key

QIJRTFXNRTXDIP-JIZZDEOASA-N

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General description

L-Cysteine hydrochloride monohydrate (LCHCMH) is a water-soluble salt of the non-essential amino acid, L-cysteine.
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

L-Cysteine may be used as a pharmaceutical reference standard for the determination of the analyte in pharmaceutical formulations by chromatography, and kinetic micro determination coupled to spectrophotometry.
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.

Biochem/physiol Actions

Antagonista del receptor glutamatérgico NMDA.

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 LRAA7165 in the slot below. This is an example certificate only and may not be the lot that you receive.

Recommended products

Find a digital Reference Material for this product available on our online platform ChemisTwin® for NMR. You can use this digital equivalent on ChemisTwin® for your sample identity confirmation and compound quantification (with digital external standard). An NMR spectrum of this substance can be viewed and an online comparison against your sample can be performed with a few mouseclicks. Learn more here and start your free trial.

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Referencia del producto
Descripción
Precios

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


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Simultaneous identification and determination of total content of aminoacids in food supplements-tablets by gas chromatography
Obreshkova DP, et al.
Asian Journal of Pharmaceutical and Clinical Research, 5, 57-68 (2012)
Indicator reaction for sensitive kinetic micro-determination of cysteine and cystine in a mixture without prior separation
Giannousios A and Papadopoulos C
Analyst, 121(4), 413-417 (1996)
Qinjian Zhao et al.
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Edward T Chouchani et al.
Nature medicine, 19(6), 753-759 (2013-05-28)
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Feng Wang et al.
Cell, 153(6), 1379-1393 (2013-06-12)
Some species mount a robust antibody response despite having limited genome-encoded combinatorial diversity potential. Cows are unusual in having exceptionally long CDR H3 loops and few V regions, but the mechanism for creating diversity is not understood. Deep sequencing reveals

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