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L-Cysteine hydrochloride monohydrate

L-Cysteine hydrochloride monohydrate Structure
L-Cysteine hydrochloride monohydrate structure
CAS No.
7048-04-6
Chemical Name:
L-Cysteine hydrochloride monohydrate
Synonyms
L-CYSTEINE HCL MONOHYDRATE;L-CYSTEINE HYDROCHLORIDE;CYSTEINE HYDROCHLORIDE MONOHYDRATE;CYSTEINE HCL H2O;L-Cys.HCl.H2O;L-CYSTEINE HCL H2O;Cysteine Hydrochloride Hydrate;L-CYSTEINE HYDROCHLORIDE HYDRATE;L-Cys-OH HCl;H-Cys-OH¤HCl¤H
CBNumber:
CB9694981
Molecular Formula:
C3H10ClNO3S
Molecular Weight:
175.63
MDL Number:
MFCD00065606
MOL File:
7048-04-6.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-04-24 14:59:15
Product description Number Pack Size Price
Cysteine hydrochloride monohydrate European Pharmacopoeia (EP) Reference Standard C3290000 100 mg $254
L-Cysteine hydrochloride monohydrate for biochemistry 1.02839 25g $71
L-Cysteine hydrochloride monohydrate EMPROVE? ESSENTIAL Ph Eur,USP 1.02735 100g $176
L-Cysteine hydrochloride monohydrate for biochemistry 1.02839 1kg $714
L-Cysteine hydrochloride monohydrate EMPROVE? EXPERT, Ph. Eur., JP, USP 1.02735 1kg $1190
More product size
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L-Cysteine hydrochloride monohydrate Properties

Melting point 175°C
alpha +6.0～+7.5゜ (20℃/D)(c=8,6mol/l HCl)(calculated on the dried basis)
bulk density 780kg/m3
Density 1.54 g/cm3
vapor pressure <0.1 hPa (20 °C)
refractive index 6 ° (C=8, 1mol/L HCl)
storage temp. Keep in dark place,Inert atmosphere,Room temperature
solubility H2O: 1 M at 20 °C, clear, colorless
form Solid
color White
PH 0.8-1.2 (100g/l, H2O, 20℃)
PH Range 1 - 2
optical activity [α]20/D +5.6±0.3°, c = 5% in 5 M HCl
biological source synthetic
Water Solubility Soluble in cold water.
λmax λ: 260 nm Amax: 1.0
λ: 280 nm Amax: 0.3
Sensitive Hygroscopic
Merck 14,2781
BRN 5158059
Stability Stable. Incompatible with strong oxidizing agents, most common metals, hydrogen chloride.
InChI 1S/C3H7NO2S.ClH.H2O/c4-2(1-7)3(5)6;;/h2,7H,1,4H2,(H,5,6);1H;1H2/t2-;;/m0../s1
InChIKey QIJRTFXNRTXDIP-JIZZDEOASA-N
SMILES O.Cl.N[C@@H](CS)C(O)=O
LogP 0.235 (est)
CAS DataBase Reference 7048-04-6(CAS DataBase Reference)
FDA UNII ZT934N0X4W
UNSPSC Code 41116107
NACRES NA.26

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
GHS07
Signal word  Warning
Hazard statements  H319
Precautionary statements  P264-P280-P305+P351+P338-P337+P313
PPE dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-36
WGK Germany  3
RTECS  HA2285000
F  3-10-23
TSCA  Yes
HS Code  29309013
Storage Class 11 - Combustible Solids

L-Cysteine hydrochloride monohydrate price More Price(57)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich C3290000 Cysteine hydrochloride monohydrate European Pharmacopoeia (EP) Reference Standard 7048-04-6 100 mg $254 2026-03-19 Buy
Sigma-Aldrich 1.02839 L-Cysteine hydrochloride monohydrate for biochemistry 7048-04-6 25g $71 2026-03-19 Buy
Sigma-Aldrich 1.02735 L-Cysteine hydrochloride monohydrate EMPROVE? ESSENTIAL Ph Eur,USP 7048-04-6 100g $176 2026-03-19 Buy
Sigma-Aldrich 1.02839 L-Cysteine hydrochloride monohydrate for biochemistry 7048-04-6 1kg $714 2026-03-19 Buy
Sigma-Aldrich 1.02735 L-Cysteine hydrochloride monohydrate EMPROVE? EXPERT, Ph. Eur., JP, USP 7048-04-6 1kg $1190 2026-03-19 Buy
Product number Packaging Price Buy
C3290000 100 mg $254 Buy
1.02839 25g $71 Buy
1.02735 100g $176 Buy
1.02839 1kg $714 Buy
1.02735 1kg $1190 Buy

L-Cysteine hydrochloride monohydrate Chemical Properties,Uses,Production

Application

L-cysteine ​​hydrochloride monohydrate has been used in protocols to isolate dorsal root ganglion neurons (DRG).  It was also used in research to test its effect as an inhibitor of enzymatic browning of apples.

General descriptio

L-cysteine ​​hydrochloride monohydrate (LCHCMH) is a water-soluble salt of the non-essential amino acid L-cysteine. It is widely used in the pharmaceutical industry. The thermodynamic characteristics of LCHCMH in aqueous solution have been reported. [1] It can be crystallized in an orthogonal system with the P212121 space group. Its nonlinear optical (NLO) characteristics have been studied in single crystals grown by unidirectional Sankaranarayanan-Ramasamy (SR) technology.

Chemical Properties

white crystalline powder
L-Cysteine hydrochloride monohydrate

Uses

L-Cysteine is a non-essential amino acid that can be synthesized by the human body under normal physiological conditions if a sufficient quantity of methionine is available. L-Cysteine is commonly use d as a precursor in the food and pharmaceutical industries. L-Cysteine is used as a processing aid for baking, as an additive in cigarettes, as well as in the preparation of meat flavours.

Uses

L-Cysteine hydrochloride monohydrate is used as a precursor in food, pharmaceutical and personal care products. It is actively involved in the production of flavors such as meat flavor obtained by reacting with sugars. It plays an important role as a key raw material for the manufacture of N-acetyl-L-cysteine, S-carboxymethyl-L-cysteine and L-cysteine base. It is involved in the treatment of liver disease as an antioxidant and antidote. Being an essential amino acid, it used as animal feed especially for sheep, which is responsible the growth of wool.

Uses

L-Cysteine hydrochloride monohydrate has been used as a component of yeast dropout media for culturing yeasts. It has also been used as a component of differential reinforced clostridial broth (DRCM) for the isolation of clostridia.

Definition

ChEBI: A hydrate that is the monohydrate form of L-cysteine hydrochloride.

General Description

This product is supplied from Wacker FERMOPURE material, but is sold for R&D use only, not for drug, household or other uses.

reaction suitability

reaction type: solution phase peptide synthesis

Biochem/physiol Actions

NMDA glutamatergic receptor antagonist.

Purification Methods

Likely impurities are cystine and tyrosine. Crystallise the salt from MeOH by adding diethyl ether, or from hot 20% HCl. Dry it under vacuum over P2O5. Hygroscopic. [Beilstein 4 III 1580, 1600.]

L-Cysteine hydrochloride monohydrate Preparation Products And Raw materials

Raw materials

Hydrogen Sulfide L-Cystine Tin granular L-Cysteine

Preparation Products

(2,4-DIAMINOPTERIDIN-6-YL)METHANOL HYDROCHLORIDE HYDRATE N10-(TRIFLUOROACETYL)PTEROIC ACID Phenol Red

L-Cysteine hydrochloride monohydrate Suppliers

Global( 719)Suppliers
Supplier Tel Email Country ProdList Advantage
Hefei TNJ Chemical Industry Co.,Ltd.
+86-0551-65418684 +8618949823763 sales@tnjchem.com China 25356 58
Hebei Chuanghai Biotechnology Co., Ltd 		+8615350571055 Sibel@chuanghaibio.com China 8738 58
Hebei Chuanghai Biotechnology Co,.LTD 		+86-86-13131129325 +8613131129325 sales1@chuanghaibio.com China 5235 58
Sichuan HongRi Pharma-Tech Co.,Ltd 		+8618382028708 ni@enlaibio.com China 1098 58
Shandong Juchuang Chemical Co., LTD 		+16837774622 admin@juchuangchem.com China 295 58
airuikechemical co., ltd. 		+86-18353166132 sales02@airuikechemical.com China 983 58
Shaanxi TNJONE Pharmaceutical Co., Ltd 		+8618092446649 sarah@tnjone.com China 1143 58
Yujiang Chemical (Shandong) Co.,Ltd. 		+8617736087130 catherine@yjchem.com.cn China 994 58
Hebei Zhuanglai Chemical Trading Co.,Ltd 		+8613343047651 admin@zlchemi.com China 3692 58
Shandong Deshang Chemical Co., Ltd. 		+86-0531-8875-2665 +8613153039501 info@deshangchem.com China 661 58
Supplier Advantage
Hefei TNJ Chemical Industry Co.,Ltd.
58
Hebei Chuanghai Biotechnology Co., Ltd 		58
Hebei Chuanghai Biotechnology Co,.LTD 		58
Sichuan HongRi Pharma-Tech Co.,Ltd 		58
Shandong Juchuang Chemical Co., LTD 		58
airuikechemical co., ltd. 		58
Shaanxi TNJONE Pharmaceutical Co., Ltd 		58
Yujiang Chemical (Shandong) Co.,Ltd. 		58
Hebei Zhuanglai Chemical Trading Co.,Ltd 		58
Shandong Deshang Chemical Co., Ltd. 		58

Related articles

View Lastest Price from L-Cysteine hydrochloride monohydrate manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
L-Cysteine hydrochloride monohydrate pictures 2026-04-27 L-Cysteine hydrochloride monohydrate
7048-04-6
 0.99 RongNa Biotechnology Co.,Ltd
L-Cysteine hydrochloride Monohydrate pictures 2026-04-27 L-Cysteine hydrochloride Monohydrate
7048-04-6
 US $0.00 / kg 25kg 99% USP/BP Food additive 200mt HUARONG(GUANGDONG) PHARMACEUTICAL CO.,LTD
L-Cys.HCl.H2O pictures 2026-04-27 L-Cys.HCl.H2O
7048-04-6
 US $0.00-0.00 / kg 1kg 99% 1T Sichuan HongRi Pharma-Tech Co.,Ltd
  • L-Cys.HCl.H2O pictures
  • L-Cys.HCl.H2O
    7048-04-6
  • US $0.00-0.00 / kg
  • 99%
  • Sichuan HongRi Pharma-Tech Co.,Ltd

L-Cysteine hydrochloride monohydrate Spectrum

L-Cysteine hydrochloride monohydrate(7048-04-6)1HNMR

7048-04-6(L-Cysteine hydrochloride monohydrate)Related Search:

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D-CYSTEINE HYDROCHLORIDE MONOHYDRATE, 99 % (95% EE/GLC) 3-Mercaptopropionic acid L-Cysteine hydrochloride monohydrate Cysteine Hydrochloride Monohydrate

1of4

(R)-(+)-CYSTEINE HYDROCHLORIDE HYDRATE H-L-CYS-OH HCL H2O H-CYS-OH HCL H2O CYSTEINI HYDROCHLORIDUM MONOHYDRICUM 3-MERCAPTO-2-AMINOPROPIONIC ACID HYDROCHLORIDE 3-MERCAPTO-2-AMINOPROPIONIC ACID HYDROCHLORIDE MONOHYDRATE alpha-amino-beta-mercapto-propionic acid hydrochloride monohydrate (R)-(+)-Cysteine hydrate hydrochloride L-Cysteine hydrate hydrochloride L-2-AMINO-3-MERCAPTOPROPANOIC ACID HYDROCHLORIDE, MONOHYDRATE L-2-AMINO-3-MERCAPTOPROPIONIC ACID MONOHYDROCHLORIDE L-CYSTEINE HYDROCHLORIDE 1-HYDRATE L-CYSTEINE HYDROCHLORIDE HYDRATE L-(+)-CYSTEINE HYDROCHLORIDE, MONOHYDRATE L-CYSTEINE HYDROCHLORIDE MONOHYDRATE L-CYSTEINE HYDROCHLORIDE SALT H2O L-CYSTEINE HYDROCHLORIDE SALT MONOHYDRATE L-CYSTEINE MONOHYDRATE HYDROCHLORIDE L-CYSTEINE MONOHYDROCHLORIDE H2O L-CYSTEINE HCL H2O L-CYSTEINE HCL HYDRATE L(+)-AMino-α-Mercaptopropionic acid hydrochloride L(+)-α-AMino-β-thiopropionic acid hydrochloride L-Cysteine.HCI.H2O L-Cysteine Hydrochloride  L-α-amino-β-merocaptopropanic acid hydrochloride alpha-Amino-beta-mercapto-propionic acid hydrochloride L-Cystene hydrochloride monohydrate L-Cysteine Hydrochloride (200 mg) 2-AMino-3-Mercaptopropionic Acid Hydrochloride Hydrate 3-Mercapto-L-alanine Hydrochloride Hydrate Cystein Hydrochloride Hydrate Cysteine Hydrochloride Hydrate E 920 Hydrochloride Hydrate Half-cystine Hydrochloride Hydrate L-Cys Hydrochloride Hydrate NSC 8746 Hydrochloride Hydrate R)-2-AMino-3-Mercaptopropanoic Acid Hydrochloride Hydrate Thioserine Hydrochloride Hydrate H-CYS-OH HCL H2O (LOW IR 2-amino-3-mercaptopropanoic acid hydrate hydrochloride L(+)-β-Mercaptoalanine hydrochloride CYSTEINE HYDROCHLORIDE MONOHYDRATE, PH EUR L-CYSTEINE-HCL-H20 L-CysteineHydrochlorideForBiochemistry L-Cys-OH HCl H-Cys-OH·HCl·H 2 O (Fe≤1 PPM) LowIronL-CysteineHydrochlorideMonohydrate H-CYS-OH HCL H2O (LOW IRON) L-Cysteine hydrochloride monohydrate >99.5% L-CYSTEINE HCL MONOHYDRATE, NATURAL L-Cysteine HCL Monohydrous Cysteine Hydrochloride, Monohydrate, L- Cysteine Hydrochloride, L-(+), Monohydrate β-Mercaptoalanine Hydrochloride Hydrate L-Cysteine Hydrochloride, Monohydrate, USP The L- cysteinehydrochloride Monohydrate L-Cysteine hydrochloride monohydrate Produced by Wacker Chemie AG, Burghausen, Germany, Life Science, 98.5-101.0% (Ph.Eur (2.2.20))