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258881

Sigma-Aldrich

2-Amino-1,3,4-thiadiazole

97%

Synonym(s):

1,3,4-Thiadiazol-2-amine

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About This Item

Empirical Formula (Hill Notation):
C2H3N3S
CAS Number:
4005-51-0
Molecular Weight:
101.13
Beilstein:
107135
EC Number:
223-657-7
MDL number:
MFCD00003107
UNSPSC Code:
12352100
PubChem Substance ID:
24855666
NACRES:
NA.22

Assay

97%

form

powder

mp

188-191 °C (dec.) (lit.)

solubility

water: soluble 25 mg/mL, clear, colorless

SMILES string

Nc1nncs1

InChI

1S/C2H3N3S/c3-2-5-4-1-6-2/h1H,(H2,3,5)

InChI key

QUKGLNCXGVWCJX-UHFFFAOYSA-N

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General description

2-Amino-1,3,4-thiadiazole (donor) form charge transfer complexes with 2,3-dichloro-5,6-dicyano-p-benzoquinone, p-chloranil, o-chloranil, p-bromanil and chloranilic acid (acceptors). Effects of 2-amino-1,3,4-thiadiazole [aminothiadiazole (NSC 4728)] on purine and pyrimidine ribonucleotide pools of L1210 ascites cells in vivo has been reported.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H302,H315,H319,H335

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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R Asbury et al.
American journal of clinical oncology, 19(4), 400-402 (1996-08-01)
Aminothiadiazole (NSC 4728) is an analog of the thiadiazoles, a group of drugs that stimulated interest because they do not cause significant myelosuppression and have a unique ability to increase uric acid production unrelated to tissue damage. Previous articles have
J A Nelson et al.
Cancer research, 36(4), 1375-1378 (1976-04-01)
The effects of 2-amino-1,3,4-thiadiazole [aminothiadiazole (NSC 4728)] on purine and pyrimidine ribonucleotide pools of L1210 ascites cells in vivo are presented and discussed as they relate to the site of action. Within 1 hr after administration of the drug, the
R F Asbury et al.
American journal of clinical oncology, 9(4), 334-336 (1986-08-01)
Thirty-two evaluable patients with advanced epithelial ovarian cancer were treated with aminothiadiazole at a dosage of 125 mg/m2 weekly. Two patients had partial responses, 12 had stable disease, 16 had increasing disease, and two were inevaluable for response. Aminothiadiazole used
P F Engstrom et al.
American journal of clinical oncology, 14(1), 33-35 (1991-02-01)
Twenty-three patients with advanced inoperable squamous cell carcinoma of the esophagus were treated with aminothiadiazole (A-TD) 125 mg/m2 weekly plus allopurinol daily in a phase II cooperative group trial. No patients responded to treatment; 17 patients progressed, three showed stable
G Y Locker et al.
Cancer treatment reports, 71(6), 649-650 (1987-06-01)
Eighty-three patients with advanced colorectal carcinoma were entered on a phase II trial of weekly iv aminothiadiazole (125 mg/m2) plus daily oral allopurinol (300 mg). There were five partial responses. Median survival of all patients on study was 36 weeks
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