Dimethyl L-cystinate dihydrochloride

Also known as: L-Cystine dimethyl ester dihydrochloride, (H-Cys-OMe)2·2HCl, L-Cystine Dimethyl Ester 2HCl, (2R,2'R)-Dimethyl 3,3'-disulfanediylbis(2-aminopropanoate) dihydrochloride, L-Cystine, dimethyl ester, hydrochloride (1:2), L-cysteine dimethyl ester dihydrochloride, DIMETHYL CYSTINATE 2HCL, Dimethyl L-Cystine dihydrochloride, MFCD00012490, EINECS 251-261-4

Dimethyl L-cystinate dihydrochloride (CAS 32854-09-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H18Cl2N2O4S2 and a molecular weight of 341.276 g/mol. Key properties include a melting point of 182-183 °C (dec.)(lit.), a boiling point of 375.5ºC at 760 mmHg and a flash point of 180.9ºC. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 32854-09-4
Jingsj CID: J-1987325-7
Molecular Formula: C₈H₁₈Cl₂N₂O₄S₂
Molecular Weight: 341.276 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	182-183 °C (dec.)(lit.)
Boiling Point	375.5ºC at 760 mmHg
Flash Point	180.9ºC
Exact Mass	340.008514
PSA	155.24000
LogP	2.37300

GHS Safety & Compliance

IrritantSignal word: Warning

H315 — Causes skin irritation
H319 — Causes serious eye irritation
H335 — May cause respiratory irritation

Activity & Biological Data

Additional Information	[1]. Luckose F, et al. Effects of amino acid derivatives on physical, mental, and physiological activities. Crit Rev Food Sci Nutr. 2015;55(13):1793-807.

Frequently Asked Questions

What is the CAS number of Dimethyl L-cystinate dihydrochloride?

The CAS number of Dimethyl L-cystinate dihydrochloride is 32854-09-4.

What are the molecular formula and molecular weight of Dimethyl L-cystinate dihydrochloride?

Dimethyl L-cystinate dihydrochloride has molecular formula C8H18Cl2N2O4S2 and molecular weight 341.276 g/mol.

Is Dimethyl L-cystinate dihydrochloride hazardous?

Dimethyl L-cystinate dihydrochloride has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of Dimethyl L-cystinate dihydrochloride?

For Dimethyl L-cystinate dihydrochloride, Upstream Products: Methanol, L-Cystine, L-Cysteine methyl ester hydrochloride; Downstream Products: Dimethyl L-cystinate.

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. "Dimethyl L-cystinate dihydrochloride (CAS 32854-09-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1987325-7 (accessed 2026-11-09).

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