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Product Name: Guanyl-Cys-OH
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40454-21-5

40454-21-5 structure

Name: IQB-782
Chemical Name: (2R)-2-(diaminomethylideneamino)-3-sulfanylpropanoic acid
CAS Number: 40454-21-5
Molecular Formula: C₄H₉N₃O₂S
Molecular Weight: 163.19800
Catalog: Research Areas Cardiovascular Disease
Create Date: 2018-06-26 13:30:59
Modify Date: 2025-08-27 16:58:18
IQB-782 is a cysteine derivative. IQB-782 has inhibition for thrombin activatable fibrinolysis inhibitor (TAFI), with an Ki(app) of 0.14 μM. IQB-782 shows a potent mucolytic-expectorant activity[1][2].

Name	(2R)-2-(diaminomethylideneamino)-3-sulfanylpropanoic acid
Synonyms	IQB-782 N-amidino-L-cysteine CYSTEINE,N-AMIDINO-,L L-Cysteine,N-(aminoiminomethyl) N-Amidinocysteine EINECS 254-925-1 N-Guanyl-cysteine

Description	IQB-782 is a cysteine derivative. IQB-782 has inhibition for thrombin activatable fibrinolysis inhibitor (TAFI), with an Ki(app) of 0.14 μM. IQB-782 shows a potent mucolytic-expectorant activity[1][2].
Related Catalog	Research Areas >> Cardiovascular Disease Signaling Pathways >> Others >> Others
Target	Ki (app): 0.14 μM (TAFI)[1]
In Vitro	IQB-782 inhibits TAFI related carboxypeptidases with IC50s of 49 μM and 12 μM for CPN and CPB, respectively[1].
References	[1]. Do YH, et al. Inhibition of thrombin activatable fibrinolysis inhibitor by cysteine derivatives. Thromb Res. 2005;116(3):265-71. [2]. Moratalla R, et al. Pharmacological study of the new mucolytic drug N-guanyl-cysteine. Arzneimittelforschung. 1986 Jun;36(6):918-23.

Density	1.66g/cm3
Boiling Point	348.5ºC at 760mmHg
Molecular Formula	C₄H₉N₃O₂S
Molecular Weight	163.19800
Flash Point	164.5ºC
Exact Mass	163.04200
PSA	138.00000
LogP	0.04340
Index of Refraction	1.673

CHEMICAL IDENTIFICATION

RTECS NUMBER :: HA1680000

CHEMICAL NAME :: Cysteine, N-amidino-, L-

CAS REGISTRY NUMBER :: 40454-21-5

LAST UPDATED :: 199612

DATA ITEMS CITED :: 5

MOLECULAR FORMULA :: C4-H9-N3-O2-S

MOLECULAR WEIGHT :: 163.22

WISWESSER LINE NOTATION :: ZYM&MYVQ1SH

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >6 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: ARZNAD Arzneimittel-Forschung. Drug Research. (Editio Cantor Verlag, Postfach 1255, W-7960 Aulendorf, Fed. Rep. Ger.) V.1- 1951- Volume(issue)/page/year: 36,918,1986

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 2250 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: ARZNAD Arzneimittel-Forschung. Drug Research. (Editio Cantor Verlag, Postfach 1255, W-7960 Aulendorf, Fed. Rep. Ger.) V.1- 1951- Volume(issue)/page/year: 36,918,1986

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: >6 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: ARZNAD Arzneimittel-Forschung. Drug Research. (Editio Cantor Verlag, Postfach 1255, W-7960 Aulendorf, Fed. Rep. Ger.) V.1- 1951- Volume(issue)/page/year: 36,918,1986

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 3600 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: ARZNAD Arzneimittel-Forschung. Drug Research. (Editio Cantor Verlag, Postfach 1255, W-7960 Aulendorf, Fed. Rep. Ger.) V.1- 1951- Volume(issue)/page/year: 36,918,1986

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 685 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: ARZNAD Arzneimittel-Forschung. Drug Research. (Editio Cantor Verlag, Postfach 1255, W-7960 Aulendorf, Fed. Rep. Ger.) V.1- 1951- Volume(issue)/page/year: 36,918,1986

Hazard Codes	Xi
HS Code	2930909090

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

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