L-Cysteine hydrochloride monohydrate supplier

Name
L-Cysteine hydrochloride monohydrate
EINECS 200-157-7
CAS No. 7048-04-6
Article Data2
CAS DataBase
Density 1.54 g/cm3
Solubility 1 M at 20 °C in water, clear, colorless
Melting Point 175 °C
Formula C₃H₈ClNO₂S^.H₂O
Boiling Point 293.9 °C at 760 mmHg
Molecular Weight 175.636
Flash Point 131.5 °C
Transport Information
Appearance white crystalline powder
Safety 26-36
Risk Codes 36/37/38
Molecular Structure
Hazard Symbols Xi
Synonyms Cysteine,hydrochloride, monohydrate, L- (8CI);L-Cysteine, hydrochloride, monohydrate(9CI);
PSA 111.35000
LogP 0.76610

Synthetic route

: 2273-45-2
dimethyltin oxide

: 7048-04-6
L-cysteine hydrochloride monohydrate

: chlorodimethyltin(IV) L-cysteine monohydrate

Conditions

Conditions	Yield
In hydrogenchloride	99%

: hexammine cobalt(III) chloride

: barium hydroxide octahydrate

: 7048-04-6
L-cysteine hydrochloride monohydrate

: 1.5Ba(2+)*Co(C3H5NO2S)3(3-)*5H2O = Ba1.5[Co(C3H5NO2S)3]*5H2O

Conditions

Conditions	Yield
In water (argon); 70°C, 2 h; elem. anal.;	96%

...Expand

: 7048-04-6
L-cysteine hydrochloride monohydrate

: 95-01-2
2,4-Dihydroxybenzaldehyde

: 1367664-23-0
(4R)-2-(2,4-dihydroxyphenyl)thiazolidine-4-carboxylic acid

Conditions

Conditions	Yield
With sodium acetate In ethanol; water at 20℃; for 14h;	95.8%

: 77-77-0
Divinyl sulfone

: 7048-04-6
L-cysteine hydrochloride monohydrate

: C7H13NO4S2*ClH

Conditions

Conditions	Yield
In methanol at 50℃; for 100h;	95%

: 7048-04-6
L-cysteine hydrochloride monohydrate

: potassium dicyanoaurate

: [(L-cysteinato)gold(I)]

Conditions

Conditions	Yield
In water mixing of the components in double-distd. water and standing at 4°C overnight; sepn. of the ppt., washing with EtOH and dry Et2O and drying (P2O5, vac.); elem. anal.;	88.4%

: 108-24-7
acetic anhydride

: 7048-04-6
L-cysteine hydrochloride monohydrate

: 616-91-1
N-acetylcystein

Conditions

Conditions	Yield
With sodium acetate In tetrahydrofuran; water at 10 - 60℃; for 37h; pH=4 - 5; Inert atmosphere;	85%

: hexammine cobalt(III) chloride

: 1310-66-3
lithium hydroxide monohydrate

: 7048-04-6
L-cysteine hydrochloride monohydrate

: trilithium fac-Δ-tris(R-cysteinato-N,S)cobaltate(III) heptahydrate

Conditions

Conditions	Yield
In water 70°C, 2 h, addn. of EtOH, stirring (20°C, 12 h); elem. anal.;	82%

...Expand

: hexammine cobalt(III) chloride

: 7048-04-6
L-cysteine hydrochloride monohydrate

: 1310-73-2
sodium hydroxide

: trisodium fac-Δ-tris(R-cysteinato-N,S)cobaltate(III) * 11 H2O

Conditions

Conditions	Yield
In water 70°C, 2 h, addn. of EtOH, stirring (20°C, 12 h); elem. anal.;	80%

...Expand

: hexammine cobalt(III) chloride

: 7048-04-6
L-cysteine hydrochloride monohydrate

: potassium hydroxide

: tripotassium fac-Δ-tris(R-cysteinato-N,S)cobaltate(III) * 6.5 H2O

Conditions

Conditions	Yield
In water 70°C, 2 h, addn. of EtOH, stirring (20°C, 12 h); elem. anal.;	80%

...Expand

: hexammine cobalt(III) chloride

: rubidium hydroxide

: 7048-04-6
L-cysteine hydrochloride monohydrate

: trirubidium fac-Δ-tris(R-cysteinato-N,S)cobaltate(III) nonahydrate

Conditions

Conditions	Yield
In water 70°C, 2 h, addn. of EtOH, stirring (20°C, 12 h); elem. anal.;	80%

...Expand

: cesium hydroxide

: hexammine cobalt(III) chloride

: 7048-04-6
L-cysteine hydrochloride monohydrate

: tricesium fac-Δ-tris(R-cysteinato-N,S)cobaltate(III) octahydrate

Conditions

Conditions	Yield
In water 70°C, 2 h, addn. of EtOH, stirring (20°C, 12 h); elem. anal.;	80%

...Expand

: 345-35-7
2-fluorobenzyl chloride

: 7048-04-6
L-cysteine hydrochloride monohydrate

A: (2R)-2-amino-3-(2-fluorobenzylthio)propanol

B: (2R)-2-amino-3-(2-fluorobenzylthio)propionic acid

Conditions

Conditions	Yield
With hydrogenchloride In methanol; water	A n/a B 74.8%

...Expand

: 64419-24-5
2,4-dihydroxybenzonitrile

: 7048-04-6
L-cysteine hydrochloride monohydrate

: 57980-69-5
C10H9NO4S

Conditions

Conditions	Yield
With sodium hydrogencarbonate In methanol	69%

: 13862-78-7
ammonium tetrathiotungstate

: potassium chloride

: 7048-04-6
L-cysteine hydrochloride monohydrate

: potassium (di-μ-sulfido)bis{(L-cysteinato)oxotungstate(V)} pentahydrate

Conditions

Conditions	Yield
With HCl; KOH In water dropwise addn. of concd. HCl to aq. W compd. soln. with stirring; addn. of L-cysteine; stirring, several min; adjusting to pH 7 (KOH); heating at 50-60°C, 30 min; addn. of KCl; cooling to room temp.; storage in refrigerator overnight; crystn.; filtration; washing (methanol); recrystn. by dissoln. in hot water; filtration; addn. of KCl; allowing to stand overnight in a refrigerato; crystn.; elem. anal.;	50%

Yield

With HCl; KOH In water dropwise addn. of concd. HCl to aq. W compd. soln. with stirring; addn. of L-cysteine; stirring, several min; adjusting to pH 7 (KOH); heating at 50-60°C, 30 min; addn. of KCl; cooling to room temp.; storage in refrigerator overnight; crystn.; filtration; washing (methanol); recrystn. by dissoln. in hot water; filtration; addn. of KCl; allowing to stand overnight in a refrigerato; crystn.; elem. anal.;

50%

...Expand

: 7732-18-5
water

: 7048-04-6
L-cysteine hydrochloride monohydrate

: 6630-42-8, 17561-26-1, 17561-27-2, 36392-60-6
2-chloro-3-(1H-imidazol-4-yl)propanoic acid

: 2-amino-3-(1-carboxy-2-(1H-imidazol-4-yl)ethylthio)propanoic acid

Conditions

Conditions	Yield
With sodium hydroxide In ethanol for 72h; Inert atmosphere;	50%

...Expand

: 13862-78-7
ammonium tetrathiotungstate

: 7048-04-6
L-cysteine hydrochloride monohydrate

: ammonium (di-μ-sulfido)bis{(L-cysteinato)oxotungstate(V)} trihydrate

Conditions

Conditions	Yield
With NH4Cl; HCl; NH3 In water dropwise addn. of HCl to aq. W compd. soln. with stirring; addn. of cysteine; stirring, several min; adjusting pH to 7 (NH3); heating, 50-60°C, 30 min; addn. of NH4Cl; cooling to room temp.; storage in refrigerator overnight; crystn.; filtration; washing (methanol); recrystn.; elem. anal.;	46%

: 100-14-1
4-nitrobenzyl chloride

: 7048-04-6
L-cysteine hydrochloride monohydrate

A: (2R)-2-amino-3-(4-nitrobenzylthio)propanol

B: 90899-86-8
L-2-amino-3-(4-nitrobenzylthio)propionic acid

Conditions

Conditions	Yield
With hydrogenchloride; sodium hydroxide	A n/a B 45.9%

...Expand

: 13862-78-7
ammonium tetrathiotungstate

: 7048-04-6
L-cysteine hydrochloride monohydrate

: sodium (di-μ-sulfido)bis{(L-cysteinato)oxotungstate(V)} trihydrate

Conditions

Conditions	Yield
With NaCl; HCl In water dropwise addn. of HCl to aq. W compd. soln. with stirring; addn. of cysteine; stirring, several min; adjusting pH to 7 (NaOH); heating, 50-60°C, 30 min; addn. of NaCl; cooling to room temp.; storage in refrigerator overnight; crystn.; filtration; washing (methanol); recrystn.; elem. anal.;	40%

: 7631-95-0
sodium molybdate dihydrate

: 7732-18-5
water

: 7048-04-6
L-cysteine hydrochloride monohydrate

: 3Na(1+)*Mo154O462H14(H2O)48(H(O2CC(NH3)HCH2S)2)11(3-)*250H2O=Na3[Mo154O462H14(H2O)48(H(O2CC(NH3)HCH2S)2)11]*250H2O

Conditions

Conditions	Yield
In water stirred at room temp. for 5 min, heated at 55°C for 2 h (stirring), kept for 2 h at 20°C; filtered, standed for 2 d at 15-20°C, crysts. filtered, washed (cold water), dried (room temp.); elem. anal., TGA;	37%

...Expand

: 13862-78-7
ammonium tetrathiotungstate

: 7048-04-6
L-cysteine hydrochloride monohydrate

: potassium di-μ-sulfido-bis{(cysteinato)oxotungstate(V)}

Conditions

Conditions	Yield
With HCl; KOH; KCl In water concd. HCl is added to aq. soln. of W-compd., cysteine compd. is added, pH is adjusted to 7 (KOH), soln. is heated for 20 min, cooled to room temp. and filtered, KCl is added to the filtrate; soln. is kept in refrigerator overnight, crystals are filtered off, washed with MeOH and Et2O and recrystd. from hot H2O, elem. anal.;	35%

: 10213-10-2
sodium tungstate (VI) dihydrate

: sodiumsulfide nonahydrate

: 7048-04-6
L-cysteine hydrochloride monohydrate

: potassium (di-μ-sulfido)bis{(L-cysteinato)oxotungstate(V)} pentahydrate

Conditions

Conditions	Yield
With HCl; KOH In water slow addn. of concd. HCl to aq. soln. of Na2WO4 and Na2S; addn. of L-cysteine; adjusting to pH 7 (KOH); heating at 50-70°C, 20 min; filtration; addn. of KCl; filtration; washing (methanol); recrystn. by dissoln. in hot water; filtration; addn. of KCl; allowing to stand overnight in a refrigerato; crystn.; elem. anal.;	35%

...Expand

: sodium hydrogen selenide

: ammonium heptamolybdate tetrahydrate

: cesium chloride

: 7048-04-6
L-cysteine hydrochloride monohydrate

: 2Cs(1+)*{Mo2O2Se2(O2CCH(NH2)CH2S)2}(2-)*4H2O=Cs2{Mo2O2Se2(O2CCH(NH2)CH2S)2}*4H2O

Conditions

Conditions	Yield
In water slow addn. of freshly prepd. NaHSe in H2O to aq. soln. of (NH4)6(Mo7O24)*6H2O; stirring for 24 h; filtering, addn. of HO2CCH(NH2)CH2SH in H2O (pH adjusted to 6 with NaOH); standing for 24 h at room temp., refiltering;; pptn. on addn. of CsCl in H2O; recrystn. from hot H2O; elem. anal.;;	33.7%

...Expand

: tetrabutylammonium [(99g)Tc]tetrachlorooxotechnetate(V)

: 7048-04-6
L-cysteine hydrochloride monohydrate

: barium(II) chloride

: Ba(2+)*2(99)TcO(NH2CH(CH2S)CO2)2(1-)=Ba[(99)TcO(NH2CH(CH2S)CO2)2]2

Conditions

Conditions	Yield
With AcONH4 In methanol; water slow addn. of aq. cysteine to Tc-complex (in MeOH), pH-adjustment to 7.4(AcONH4), chromy. (celulose, MeOH; then Sephadex LH-20), concn., BaCl2 addn. (pptn.); recrystn. (50% aq. MeOH); elem. anal.;	33%

...Expand

: 7048-04-6
L-cysteine hydrochloride monohydrate

: 598-21-0
2-Bromoacetyl bromide

: 62305-89-9
(R)-5-oxothiomorpholine-3-carboxylic acid

Conditions

Conditions	Yield
With sodium carbonate In water for 12h; Ambient temperature;	15%

: 7048-04-6
L-cysteine hydrochloride monohydrate

formamidine disulfide dihydrochloride (1 mol): formamidine disulfide dihydrochloride (1 mol)

: 89838-59-5
S-guanylsulfanyl-L-cysteine

L-Cysteine hydrochloride monohydrate Chemical Properties

L-Cysteine hydrochloride monohydratewhite is crystals or crystalline powder with strongly acid taste. L-Cysteine hydrochloride monohydratewhite is very soluble in water.
appearance: white solid.
formula: C₃H₇NO₂S^.HCl^.H₂O.
molecular weight: 175.64 g/mol.
melting point: 176°C.
solubility: soluble in cold water.

L-Cysteine hydrochloride monohydrate Uses

L-Cysteine Hydrochloride Monohydrate is widely used in fields of medicine, food processing, biological study, materials of chemical industry and so on.
It's used as raw materials for manufacturing N-Acetyl-L-Cysteine, S-Carboxymethyl
-L-Cysteine and L-Cysteine base etc.
Besides, it is useful to cure liver disease, antioxidant and antidote.
In addition, it is used in cosmetic.

L-Cysteine hydrochloride monohydrate Toxicity Data With Reference

ORAL (LD50): Acute: 3550 mg/kg [Mouse]. 5580 mg/kg[Rat]. 4200 mg/kg [Mouse].
It is very hazardous in case of skin and eye contact, of ingestion, of inhalation.
Repeated or prolonged inhalation of it may lead to chronic respiratory irritation.

Product Name

L-Cysteine hydrochloride monohydrate

Synthetic route

L-Cysteine hydrochloride monohydrate Chemical Properties

L-Cysteine hydrochloride monohydrate Uses

L-Cysteine hydrochloride monohydrate Toxicity Data With Reference

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