meso-cystine

Also known as: (2S)-2-amino-3-[[(2R)-2-amino-2-carboxyethyl]disulfanyl]propanoic acid, (2S)-2-amino-3-[[(2R)-2-amino-3-hydroxy-3-oxo-propyl]disulfanyl]propanoic acid, (R)-3-[[(S)-2-Carboxy-2-aminoethyl]dithio]-2-aminopropanoic acid, (S)-2-amino-3-(((R)-2-amino-2-carboxyethyl)disulfanyl)propanoic acid, Cystine,meso, D,L-cystine, MESO-CYSTINE, MESO-CYSTINE USP/EP/BP, Mesocystine, UNII-KQY8R188E2, cystine powder, meso-Form

meso-cystine (CAS 6020-39-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H12N2O4S2 and a molecular weight of 240.30000 g/mol. Key properties include a melting point of 200-218ºC (dec) and a density of 1.5416 (rough estimate). No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 6020-39-9
Jingsj CID: J-1004378-4
Molecular Formula: C₆H₁₂N₂O₄S₂
Molecular Weight: 240.30000 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	200-218ºC (dec)
Density	1.5416 (rough estimate)
Exact Mass	240.02400
PSA	177.24000
LogP	0.59220
Refractive Index	1.6000 (estimate)

Customs & Trade Information

HS Code	2930909090
Summary	2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of meso-cystine?

The CAS number of meso-cystine is 6020-39-9.

What are the molecular formula and molecular weight of meso-cystine?

meso-cystine has molecular formula C6H12N2O4S2 and molecular weight 240.30000 g/mol.

What are the upstream and downstream products of meso-cystine?

For meso-cystine, Downstream Products: hydrogen sulfide.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "meso-cystine (CAS 6020-39-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1004378-4 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.