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ChemicalBook--->CAS DataBase List--->1953-02-2

1953-02-2

1953-02-2 Structure

1953-02-2 Structure
IdentificationMore
[Name]

Tiopronin
[CAS]

1953-02-2
[Synonyms]

ALPHA-MERCAPTO PROPIONYL GLYCINE
A-MERCAPTOPROPIONYL GLYCINE
LABOTEST-BB LT00451995
N-(2-MERCAPTOPROPIONYL)GLYCINE
TIOPRONIN
Tiopronin, Vetranal
N-(2-MERCAPTOPROPIONYL)GLYCINE 99%
TOPRONIN
(2-Mercaptopropionamido)acetic acid
(2-Mercaptopropionyl)glycine
Acadione
a-Mercaptopropionyglycine
BRN 1859822
Capen
Captimer
CCRIS 1935
DL-(a-Mercaptopropionyl)glycine
Epatiol
Glycine, N-(2-mercapto-1-oxopropyl)-(9CI)
Glycine, N-(2-mercaptopropionyl)-(7CI, 8CI)
[EINECS(EC#)]

217-778-4
[Molecular Formula]

C5H9NO3S
[MDL Number]

MFCD00004861
[Molecular Weight]

163.19
[MOL File]

1953-02-2.mol
Chemical PropertiesBack Directory
[Melting point ]

93-98 °C
[Boiling point ]

418.3±30.0 °C(Predicted)
[density ]

1.249 (estimate)
[refractive index ]

1.5216 (estimate)
[storage temp. ]

Inert atmosphere,2-8°C
[solubility ]

DMSO (Slightly), Methanol (Slightly)
[form ]

solid
[pka]

3.36±0.10(Predicted)
[color ]

White
[Merck ]

13,9532
[BRN ]

1859822
[CAS DataBase Reference]

1953-02-2(CAS DataBase Reference)
Safety DataBack Directory
[Hazard Codes ]

Xn
[Risk Statements ]

R22:Harmful if swallowed.
[Safety Statements ]

S36/37:Wear suitable protective clothing and gloves .
[WGK Germany ]

3
[RTECS ]

MC0596500
[HS Code ]

2930.90.4950
[Toxicity]

LD50 i.v. in mice: 2.1 g/kg (Fujimura)
Raw materials And Preparation ProductsBack Directory
[Raw materials]

Thionyl chloride-->Sulfur-->Glycine-->Propionic acid-->Propionyl chloride-->Propionyl bromide-->2-Bromopropionyl chloride-->Thiobenzoic acid-->Ammonia-->Sodium-->Benzyl chloride
Material Safety Data Sheet(MSDS)Back Directory
[msds information]

alpha-Mercaptopropionyl glycine(1953-02-2).msds
Hazard InformationBack Directory
[Description]

Tiopronin is a sulfiydryl derivative of N-propylglycine useful in the treatment of cystine urolithiasis in children. It is also reportedly effective in the management of rheumatoid polyarthritis, possibly due to its inhibitory effect on the free oxygen radicals produced by inflammatory macrophages and granulocytes.
[Chemical Properties]

White Solid
[Originator]

Roussel-Uclaf (Japan)
[Uses]

It is used as antidote against heavy metal poisoning; hepatoprotectant; mucolytic.
[Definition]

ChEBI: Tiopronin is a N-acyl-amino acid.
[Manufacturing Process]

α-Benzylmercaptopropionic acid (melting point 76°C to 78°C; 100 g) prepared by condensation of α-mercaptopropionic acid with benzyl chloride is allowed to stand overnight with 80 g of thionyl chloride. After removal of excess thionyl chloride distillation in vacuo gives 70 g of α-benzylmercaptopropionic acid chloride of boiling point 138°C to 139°C/7 to 8 mm Hg.
Then, 25 g of glycine is dissolved in 165 ml of 2 N sodium hydroxide solution and 70 g of α-benzylmercaptopropionic acid chloride and 100 ml of 2 N sodium hydroxide solution are dropped thereinto simultaneously at 3°C to 5°C. The solution is then stirred at room temperature for 3 to 4 hours to complete the reaction, the reaction solution is washed with ether, the aqueous layer is acidified with hydrochloric acid, and the resulting crystals are collected by filtration. These are recrystallized from a mixture of methanol and ethyl acetate to give 60 g of α-benzylmercaptopropionylglycine of melting point 133°C to 134°C.
This α-benzylmercaptopropionylglycine (60 g) is dissolved in 400 ml of liquid ammonia, kept at about -50°C, and 12 g of sodium metal is gradually added thereto. After the reaction, excess ammonia is removed therefrom, the residue is dissolved in water, washed with ether and the residual aqueous layer is adjusted to pH 1 with hydrochloric acid and concentrated in vacuo in a stream of hydrogen sulfide. The crystalline residue is dried and recrystallized from ethyl acetate to give 25 g of α-mercaptopropionylglycine of melting point 95°C to 97°C.
[Brand name]

Thiola
[Therapeutic Function]

Antidote (heavy metal)
[Biochem/physiol Actions]

N-(2-Mercaptopropionyl)glycine (NMPG) is a thiol compound associated with autoimmune hypoglycemia. It is a diffusible antioxidant and reduces the severity of colonic injury. NMPG also relieves myeloperoxidase activity and stimulates hypoxia-inducible factor-1 (HIF-1) - vascular endothelial growth factor (VEGF) pathway for ulcer healing.
[Veterinary Drugs and Treatments]

Tiopronin is indicated for the prevention of cystine urolithiasis in patients where dietary therapy combined with urinary alkalinization is not completely effective. It may also be useful in combination with urine alkalinization to dissolve stones.
[storage]

Store at -20°C
Spectrum DetailBack Directory
[Spectrum Detail]

Tiopronin(1953-02-2)1HNMR
Tiopronin(1953-02-2)IR
Tiopronin(1953-02-2)Raman
Well-known Reagent Company Product InformationBack Directory
[Sigma Aldrich]

1953-02-2(sigmaaldrich)
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