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N,N'-Bis(tert-butoxycarbonyl)-L-cystine

Also known as: N,N'-Di-Boc-L-cystine, N,N'-Bis-Boc-cystine, N,N'-Di-BOC-L-cystine, BIS-BOC-L-CYSTINE, (Boc-Cys-OH)2, 3,3'-disulfanediylbis(2-(tert-butoxycarbonylamino)propanoic acid)

N,N'-Bis(tert-butoxycarbonyl)-L-cystine (CAS 10389-65-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C16H28N2O8S2 and a molecular weight of 440.532 g/mol. Key properties include a melting point of 140-145ºC, a boiling point of 627.4±55.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 333.2±31.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
10389-65-8
Jingsj CID
J-1969607-2
Molecular Formula
C16H28N2O8S2
Molecular Weight
440.532 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point140-145ºC
Boiling Point627.4±55.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point333.2±31.5 °C
Exact Mass440.128693
PSA201.86000
LogP4.79
Vapor Pressure0.0±4.0 mmHg at 25°C
Refractive Index1.544
Storage ConditionsStore at 0-5°C

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.

Customs & Trade Information

HS Code2930909090
Summary2930909090. 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 N,N'-Bis(tert-butoxycarbonyl)-L-cystine?

The CAS number of N,N'-Bis(tert-butoxycarbonyl)-L-cystine is 10389-65-8.

What are the molecular formula and molecular weight of N,N'-Bis(tert-butoxycarbonyl)-L-cystine?

N,N'-Bis(tert-butoxycarbonyl)-L-cystine has molecular formula C16H28N2O8S2 and molecular weight 440.532 g/mol.

What are the upstream and downstream products of N,N'-Bis(tert-butoxycarbonyl)-L-cystine?

For N,N'-Bis(tert-butoxycarbonyl)-L-cystine, Upstream Products: L-Cystine, Di-tert-butyl dicarbonate, L-Cysteine; Downstream Products: N-[(1,1-Dimethylethoxy)carbonyl]-S-(diphenylmethyl)-L-cysteine, Boc-L-cysteine, Boc-Cys(pMeOBzl)-OH.

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

Last updated:

How to cite: Jingsj. "N,N'-Bis(tert-butoxycarbonyl)-L-cystine (CAS 10389-65-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1969607-2 (accessed 2026-11-09).

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