Cas no 1637-71-4 (S-Sulfo-L-cysteine)

S-Sulfo-L-cysteine is a modified amino acid derivative where the thiol group of L-cysteine is sulfonated, resulting in a sulfonate (-SO??) substitution. This modification enhances its solubility and stability in aqueous solutions compared to free cysteine, making it useful in biochemical and pharmaceutical research. The sulfonate group provides a negatively charged moiety, which can influence protein interactions and redox chemistry. S-Sulfo-L-cysteine is particularly valuable in studying cysteine-dependent enzymatic processes, peptide synthesis, and as a precursor for sulfated biomolecules. Its defined structure and reactivity make it a reliable reagent for controlled experiments in molecular biology and medicinal chemistry.

S-Sulfo-L-cysteine structure

Product Name:S-Sulfo-L-cysteine

CAS No:1637-71-4

MF:C₃H₇NO₅S₂

MW:201.221378564835

MDL:MFCD00661097

CID:216713

PubChem ID:115015

Update Time:2025-05-20

S-Sulfo-L-cysteine Chemical and Physical Properties

Names and Identifiers

- (R)-2-Amino-3-((sulfooxy)thio)propanoic acid
- (2R)-2-amino-3-sulfosulfanylpropanoic acid
- L-Cysteine, S-sulfo-
- S-sulfocysteine
- Cysteine-S-sulfate
- Cysteine-S-sulfonate
- Cysteinyl-S-sulfonate
- Cysteinyl-S-sulfonic acid
- L-Cysteine S-sulfate
- S-Sulfo-L-cystein
- S-Sulfo-L-cysteine
- S-SULFO-L-CYSTEINE SODIUM SALT
- S-Sulphocysteine
- S-sulpho-L-cysteine
- C05824
- S-SULFO-CYSTEINE
- CYSTEINE-S-SULFATE 1-HYDRATE
- CYSTEINE-S-SULFATE, MONOHYDRATE
- L-CYSTEINE-S-SULFATE, MONOHYDRATE
- (2R)-2-amino-3-sulfosulfanyl-propanoic acid
- BDBM50269414
- L-Cysteine-S-sulfonate
- NS00014865
- CHEBI:27891
- L-Cysteine S-sulphate
- NOKPBJYHPHHWAN-REOHCLBHSA-N
- Q27095171
- Alaninethiosulfuric acid
- 3-(sulfosulfanyl)-l-alanine
- AKOS040758947
- (R)-2-amino-3-(sulfothio)propanoic acid
- Cysteine-S-Sulfonic Acid
- DTXSID20167649
- HY-113084
- L-Cysteinesulfonic acid
- (2R)-2-amino-3-(sulfosulfanyl)propanoic acid
- L-Cysteine hydrogen sulfate (ester)
- L-Cysteine S-sulfate, >=98% (TLC)
- (2R)-2-azaniumyl-3-sulfosulfanylpropanoate
- CS-0059520
- DB04370
- J-010087
- L-Cysteine, hydrogen sulfate (ester)
- L-Cysteine hydrogen sulphate (ester)
- S-Cysteinesulfonic acid
- CHEMBL457665
- L-Cysteine hydrogen sulfate
- 1637-71-4
- UNII-885F2S42LL
- Cysteine-S-sulphate
- NCGC00163281-02
- NCGC00163281-01
- 885F2S42LL
- SCHEMBL399716
- TS-09231
- BRD-K59527975-236-01-8
- DA-78027
- G91042
- MDL： MFCD00661097
- Inchi： 1S/C3H7NO5S2/c4-2(3(5)6)1-10-11(7,8)9/h2H,1,4H2,(H,5,6)(H,7,8,9)/t2-/m0/s1
- InChI Key： NOKPBJYHPHHWAN-REOHCLBHSA-N
- SMILES： S(C[C@@H](C(=O)O)N)S(=O)(=O)O

Computed Properties

Exact Mass: 200.97700
Monoisotopic Mass: 200.976564
Isotope Atom Count: 0
Hydrogen Bond Donor Count: 3
Hydrogen Bond Acceptor Count: 6
Heavy Atom Count: 11
Rotatable Bond Count: 4
Complexity: 229
Covalently-Bonded Unit Count: 1
Defined Atom Stereocenter Count: 1
Undefined Atom Stereocenter Count : 0
Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Surface Charge: 0
Tautomer Count: nothing
XLogP3: -4
Topological Polar Surface Area: 151

Experimental Properties

Color/Form: Crystallization.
Density: g/cm3
Melting Point: 184-185°C
Boiling Point: °Cat760mmHg
Flash Point: °C
Refractive Index: 1.604
Solubility: H2O: 20?mg/mL, clear, colorless
Stability/Shelf Life: Store in Freezer at -20°C
PSA: 151.37000
LogP: 0.71540
Solubility: dissolve in water

S-Sulfo-L-cysteine Security Information

WGK Germany：3
Hazard Category Code： 36/37/38
Safety Instruction： S26; S36
Hazardous Material Identification：
Storage Condition：?20°C
Risk Phrases：R36/37/38

S-Sulfo-L-cysteine Customs Data

HS CODE：2930909090
Customs Data：

China Customs Code:
2930909090

Overview:

2930909090. Other organic sulfur compounds. VAT:17.0%. Tax refund rate:13.0%. Regulatory conditions:nothing. MFN tariff:6.5%. general tariff:30.0%

Declaration elements:

Product Name, component content, use to

Summary:

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

S-Sulfo-L-cysteine Pricemore >>

Related Categories	No.	Product Name	Cas No.	Purity	Specification	Price	update time
XI GE MA AO DE LI QI （ SHANG HAI ） MAO YI Co., Ltd.	C2196-5MG	S-Sulfo-L-cysteine	1637-71-4		5mg	￥1924.13	2023-09-28
XI GE MA AO DE LI QI （ SHANG HAI ） MAO YI Co., Ltd.	C2196-25MG	S-Sulfo-L-cysteine	1637-71-4		25mg	￥6640.68	2023-09-28
SHANG HAI MAI KE LIN SHENG HUA Technology Co., Ltd.	S923248-5mg	S-Sulfo-L-cysteine	1637-71-4	98%	5mg	￥1,529.00	2022-08-31
SHANG HAI MAI KE LIN SHENG HUA Technology Co., Ltd.	S923248-25mg	S-Sulfo-L-cysteine	1637-71-4	98%	25mg	￥3,699.00	2022-08-31
SHANG HAI MAI KE LIN SHENG HUA Technology Co., Ltd.	S923248-100mg	S-Sulfo-L-cysteine	1637-71-4	98%	100mg	￥7,500.00	2022-08-31
SHANG HAI MAI KE LIN SHENG HUA Technology Co., Ltd.	S923248-500mg	S-Sulfo-L-cysteine	1637-71-4	98%	500mg	￥9,998.00	2022-08-31
TRC	S223755-50mg	S-Sulfo-L-cysteine	1637-71-4		50mg	75.00	2021-07-18
TRC	S223755-100mg	S-Sulfo-L-cysteine	1637-71-4		100mg	125.00	2021-07-18
TRC	S223755-250mg	S-Sulfo-L-cysteine	1637-71-4		250mg	250.00	2021-07-18
TRC	S223755-500mg	S-Sulfo-L-cysteine	1637-71-4		500mg	$58.00	2023-05-17

S-Sulfo-L-cysteine Suppliers

Amadis Chemical Company Limited

Gold Member

Audited Supplier

(CAS:1637-71-4)S-Sulfo-L-cysteine

Order Number:A1250815

Stock Status:in Stock

Quantity:250mg

Purity:99%

Pricing Information Last Updated:Friday, 30 August 2024 21:54

Price ($):639

Email:[email protected]

Product Official Link

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Related Categories

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