Key Documents

View All Documentation

Cystine

Name: Cystine
Brand: USP

United States Pharmacopeia (USP) Reference Standard

Synonym(s):

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

Select a Size

Change View

Size/SKU	Availability	Price

About This Item

Linear Formula:

[-SCH₂CH(NH₂)CO₂H]₂

CAS Number:

56-89-3

Molecular Weight:

240.30

UNSPSC Code:

41116107

NACRES:

NA.24

PubChem Substance ID:

329749499

MDL number:

MFCD00064228

Beilstein/REAXYS Number:

1728094

Pricing and availability is not currently available.

Technical Service

Need help? Our team of experienced scientists is here for you.

Let Us Assist

Properties

grade

pharmaceutical primary standard

agency

USP

API family

cystine

manufacturer/tradename

USP

mp

>240 °C (dec.) (lit.)

application(s)

pharmaceutical (small molecule)

format

neat

storage temp.

2-8°C

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

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.For further information and support please go to the website of the issuing Pharmacopoeia.

Application

Cystine USP reference standard, intended for use in specified quality tests and assays as specified in the USP compendia.

Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.

Other Notes

Sales restrictions may apply.

Compare Similar Items

View Full Comparison

Show Differences

1 of 1

This Item	C3300000	PHR1323	NIST143D
USP 1161586 Cystine	C3300000 Cystine	Supelco PHR1323 L-Cystine	NIST143D Cystine
grade pharmaceutical primary standard	grade pharmaceutical primary standard	grade certified reference material, pharmaceutical secondary standard	grade certified reference material
manufacturer/tradename USP	manufacturer/tradename EDQM	manufacturer/tradename -	manufacturer/tradename NIST^®
format neat	format neat	format neat	format neat
application(s) pharmaceutical (small molecule)	application(s) pharmaceutical (small molecule)	application(s) pharmaceutical (small molecule)	application(s) -
mp >240 °C (dec.) (lit.)	mp >240 °C (dec.) (lit.)	mp >240 °C (dec.) (lit.)	mp >240 °C (dec.) (lit.)
storage temp. 2-8°C	storage temp. -	storage temp. 2-30°C	storage temp. -

Still not finding the right product?

Explore all of our products under Cystine

Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

It looks like we've run into a problem, but you can still download Certificates of Analysis from our Documents section.

If you need assistance, please contact Customer Support

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.