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Thidiazuron

Thidiazuron structure

CAS No.: 51707-55-2

Chemical Name:: Thidiazuron

Synonyms: TDZ;Thiadiazuron;Thidiazurone;Lift;DROPP;defolit;sn49537;Avguron;DROPP(R);Dropp SC

CBNumber:: CB3684289

Molecular Formula:: C9H8N4OS

Molecular Weight:: 220.25

MDL Number:: MFCD00078723

MOL File:: 51707-55-2.mol

MSDS File:: SDS

Last updated:2026-04-10 10:27:12

Product description	Number	Pack Size	Price
Thidiazuron plant cell culture tested, BioReagent	P6186	25mg	$180
Thidiazuron PESTANAL , analytical standard	45686	250mg	$115
Thidiazuron	T3995	5G	$111
Thidiazuron	T3995	25G	$371
Thidiazuron ≥98%	17272	100mg	$64
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Thidiazuron Properties

Melting point	213°C
Density	1.3493 (rough estimate)
refractive index	1.6390 (estimate)
storage temp.	Sealed in dry,2-8°C
solubility	Soluble in DMSO
pka	12.06±0.70(Predicted)
form	Solid
color	Light yellow to yellow
Merck	13,9384
BRN	1078092
Henry's Law Constant	3.0×10⁷ mol/(m³Pa) at 25℃, HSDB (2015)
Major Application	agriculture
InChI	InChI=1S/C9H8N4OS/c14-9(12-8-6-10-13-15-8)11-7-4-2-1-3-5-7/h1-6H,(H2,11,12,14)
InChIKey	HFCYZXMHUIHAQI-UHFFFAOYSA-N
SMILES	N(C1=CC=CC=C1)C(NC1SN=NC=1)=O
CAS DataBase Reference	51707-55-2(CAS DataBase Reference)
FDA UNII	0091WH7STF
Pesticides Freedom of Information Act (FOIA)	Thidiazuron
EPA Substance Registry System	Thidiazuron (51707-55-2)
UNSPSC Code	41116107
NACRES	NA.72

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS07,GHS09

Signal word

Warning

Hazard statements

H315-H319-H335-H410

Precautionary statements

P261-P264-P271-P273-P302+P352-P305+P351+P338

target organs

Respiratory system

PPE

dust mask type N95 (US), Eyeshields, Faceshields, Gloves

Hazard Codes

Xi,N

Risk Statements

36/37/38-51/53

Safety Statements

22-26-36-61

RIDADR

UN 3077 9 / PGIII

WGK Germany

RTECS

YU1395000

HS Code

2934999090

Storage Class

11 - Combustible Solids

Hazard Classifications

Aquatic Acute 1
Aquatic Chronic 1
Eye Irrit. 2
Skin Irrit. 2
STOT SE 3

Hazardous Substances Data

51707-55-2(Hazardous Substances Data)

Toxicity

LC50 (96-hour) for bluegill sunsh, channel catsh and rainbow trout >1,000 mg/L (Hartley and Kidd, 1987); acute oral LD50 for rats >5,000 mg/kg (Hartley and Kidd, 1987), 5,350 mg/kg (RTECS, 1985).

NFPA 704

	0
3		0

Thidiazuron price More Price(25)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	P6186	Thidiazuron plant cell culture tested, BioReagent	51707-55-2	25mg	$180	2026-03-19	Buy
Sigma-Aldrich	45686	Thidiazuron PESTANAL , analytical standard	51707-55-2	250mg	$115	2026-03-19	Buy
TCI Chemical	T3995	Thidiazuron	51707-55-2	5G	$111	2026-03-19	Buy
TCI Chemical	T3995	Thidiazuron	51707-55-2	25G	$371	2026-03-19	Buy
Cayman Chemical	17272	Thidiazuron ≥98%	51707-55-2	100mg	$64	2024-03-01	Buy

Product number	Packaging	Price	Buy
P6186	25mg	$180	Buy
45686	250mg	$115	Buy
T3995	5G	$111	Buy
T3995	25G	$371	Buy
17272	100mg	$64	Buy

Thidiazuron Chemical Properties,Uses,Production

Chemical Properties

The pure product is a white odorless and tasteless crystalline solid. m.p.210～212.5°C (decomposition at 217°C), vapor pressure 4×10-9Pa) (25°C). Solubility at 25°C: dimethyl sulfoxide>500g/L, dimethylformamide>500g/L, cyclohexanone 21.5g/L, acetone 8g/L, methanol 4.5g/L, ethyl acetate 0.8 g/L, hexane 6mg/L, insoluble in aliphatic and aromatic hydrocarbons, solubility in water 31mg/L. The partition coefficient is 59 (pH=7.3). Stable below 200°C; stable to water at room temperature, half-life > 24d; half-life in soil < 60d.

Uses

Thidiazuron is a non-purine containing urea derivative with cytokinin activity. Thidiazuron is used as a cotton defoliant and a plant growth regulator in tissue culture.

Uses

Plant growth regulator used to defoliate cotton to facilitate harvesting.

Definition

ChEBI: Thidiazuron is a member of ureas.

General Description

Thidiazuron is a systemic herbicide, widely employed as an effective plant growth regulator and pre-harvest defoliant for crops such as cotton.

Agricultural Uses

Thidiazuron is substituted urea that is used to defoliate cotton plants. Thidiazuron, which has cytokinin activity, is one of the many harvesting aids needed in agriculture.

Agricultural Uses

Herbicide, Defoliant, Plant growth regulator: Used primarily as a cotton defoliant in order to increase the harvest yield. Not applied to food crops. Not approved for use in EU countries. Registered for use in the U.S. U.S. Maximum Allowable Residue Levels for Thidiazuron and its aniline-containing metabolites in or on the following food commodities: [40 CFR 180.403(a)]: cattle, fat 0.4 ppm; cattle, meat 0.4 ppm; cattle, meat byproducts 0.4 ppm; cotton, gin byproducts 24.0 ppm; cotton, undelinted seed 0.3 ppm; goat, fat 0.4 ppm; goat meat 0.4 ppm; goat, meat byproducts 0.4 ppm; hog, fat 0.4 ppm; hog, meat 0.4 ppm; hog, meat byproducts 0.4 ppm; horse, fat 0.4 ppm; horse, meat 0.4 ppm; horse, meat byproducts 0.4 ppm; milk 0.05 ppm; sheep, fat 0.4 ppm; sheep, meat 0.4 ppm; sheep, meat byproducts 0.4 ppm.

Trade name

DAZE®; DEFOLIT®; DROPP®; GINSTAR EC® (thidiazuron + diuron); LEAFLESS® Tthidiazuron; SN 49537®

Biological Activity

Thidiazuron (TDZ) is a plant growth regulator and a synthetic diphenylurea cytokinin used in micropropagations to supplement media such as Murashige and Skoog medium. TDZ promotes plant organogenesis (shoot regeneration) and plant regeneration. Thidiazuron (TDZ) enables the production of virus-free stock plants, speeds up breeding, and provides new genotypes for the market. It is also used as a phenylurea herbicide for controlling weeds in agricultural and nonagricultural practices. Thidiazuron acts as a pesticide by inhibiting photosystem II.

Safety Profile

Moderately toxic by ingestion. Experimental reproductive effects. When heated to decomposition it emits toxic fumes of SOx and NOx.

Environmental Fate

Soil. The reported half-life in soil is approximately 26–144 days (Hartley and Kidd, 1987).
Photolytic. Rapidly converted to the photoisomer, 1-phenyl-3-(1,2,5-thiadiazol-3- yl)urea (Worthing and Hance, 1991). When thidiazuron adsorbed by soil was exposed to UV light (λ <290 nm), 1-phenyl-3-(1,2,5-thiadiazol-3-yl)urea formed as the majo

Thidiazuron synthesis

Synthesis of Thidiazuron from carbon monoxide and Aniline and 5-Amino-1,2,3-thiadiazole

Thidiazuron Preparation Products And Raw materials

Raw materials

Ethyl carbazate Extractant 2-Mercapto-5-methyl-1,3,4-thiadiazole Acetamide Diazomethane

Phenyl isocyanate Chloroacetaldehyde Diethyl carbonate Magnesium oxide Thionyl chloride

Celite 1,3-Cyclopentadiene Ammonia 5-Amino-1,2,3-thiadiazole

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Preparation Products

Thidiazuron Suppliers

Global( 441)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Hebei Chuanghai Biotechnology Co., Ltd	+8615350571055	Sibel@chuanghaibio.com	China	8738	58
Qingdao Trust Agri Chemical Co.,Ltd	+86-008615963231493 +86-008613573296305	trustagri@hotmail.com	China	299	58
Hebei Zhuanglai Chemical Trading Co Ltd	+86-16264648883	niki@zlchemi.com	China	7245	58
Capot Chemical Co.,Ltd.	+86-（0）57185586718; +8613336195806	sales@capot.com	China	29640	60
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21592	55
career henan chemical co	+86-0371-86658258 +8613203830695	sales@coreychem.com	China	29821	58
Xiamen AmoyChem Co., Ltd	+86-86-5926051114 +8615060885618	sales@amoychem.com	China	6369	58
Shandong chuangyingchemical Co., Ltd.	18853181302	sale@chuangyingchem.com	CHINA	5906	58
BOC Sciences	+1-631-485-4226	inquiry@bocsci.com	United States	19552	58
CONIER CHEM AND PHARMA LIMITED	+8618523575427	sales@conier.com	China	49977	58

Supplier	Advantage
Hebei Chuanghai Biotechnology Co., Ltd	58
Qingdao Trust Agri Chemical Co.,Ltd	58
Hebei Zhuanglai Chemical Trading Co Ltd	58
Capot Chemical Co.,Ltd.	60
Henan Tianfu Chemical Co.,Ltd.	55
career henan chemical co	58
Xiamen AmoyChem Co., Ltd	58
Shandong chuangyingchemical Co., Ltd.	58
BOC Sciences	58
CONIER CHEM AND PHARMA LIMITED	58

View Lastest Price from Thidiazuron manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2026-04-22	5-Phenylcarbamoylamino-1,2,3-thiadiazole 51707-55-2			0.99		RongNa Biotechnology Co.,Ltd
2026-04-22	Thidiazuron 51707-55-2	US $0.00 / KG	1KG	98.0%	1000kg/month	WUHAN FORTUNA CHEMICAL CO., LTD
2026-04-17	Thidiazuron 51707-55-2	US $0.00 / kg	1kg	99	20tons	Qingdao Trust Agri Chemical Co.,Ltd

5-Phenylcarbamoylamino-1,2,3-thiadiazole
51707-55-2
0.99
RongNa Biotechnology Co.,Ltd

Thidiazuron
51707-55-2
US $0.00 / KG
98.0%
WUHAN FORTUNA CHEMICAL CO., LTD

Thidiazuron
51707-55-2
US $0.00 / kg
99
Qingdao Trust Agri Chemical Co.,Ltd

Thidiazuron Spectrum

Thidiazuron(51707-55-2)¹HNMR

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Thidiazauron (1-Phenyl-3-(1,2,3-thiadiazol-5-yl)-harnstoff N-phenyl-N-1,2,3,-thiadiazol-5-yluree 5-(N-Phenylcarbonylamino)-1,2,3-thiadiazole N-Phenyl-N'-1,2,3-thiodiazol-5-yl urea THIDIAZURON PESTANAL (1-PHENYL- 3-(1,2,3 THIDIAZURON, 1GM, NEAT 1-PHENYL-3-(1,2,3-THIADIAZOL-5-YL)UREA*P LANT CELL C TDZ Thidiazurone Urea, N-phenyl-N-1,2,3-thiadiazol-5-yl- thidiazuron (bsi,iso,ansi) THIDAZURON Thidiazuron (TDZ) THIDIAZURON (1-PHENYL- 3-(1,2,3-THIADIAZOL-5-YL)UREA) Thidiazuron W.P.(50%) Thidiazuron 1-phenyl-3-(thiadiazol-5-yl)urea Thiadiazuron THIDIAZAURON 1-PHENYL-3-(1,2,3-THIADIAZOL-5-YL)UREA 5-Phenylcarbamoylamino-1,2,3-thiadiazole 1-Phenyl-3-(1,2,3-thiadiazol-5-yl)urea,TDZ Thidiazuron 0 N-PHENYL-N'-(1,2,3-THIADIAZOL-5-YL)UREA DROPP DROPP(R) (n-1,2,3-thiadiazolyl-5)-n’-phenylurea 1-phenyl-3-(1,2,3-thiadiazol-5-yl)-ure 1-phenyl-3-(1,2,3-thiadiazol-5-yl)urea*plantcell defolit sn49537 THIDIAZURON (95%) Thidiazuron 95% Thidiazuron 250mg [51707-55-2] Avguron CCG-24904 Dropp SC Lift TAG (plant growth regulator) Thidazuron(TDZ) Dropp(tm) Thidiazuron, for plant cell culture,≥97% Thidiazuron Standard Thidiazuron @100 μg/mL in MeOH Thidiazuron@1000 μg/mL in Acetonitrile hidiazuron Thidiazuron 98%TC 51707-55-2 5-Phenylcarbamoylamino-1,2,3-thiadiazole Thidiazuron (TDZ) extrapure, 97% Thidiazuron (TDZ) for tissue culture, 97% Thiamethoxam benzene lung Thidiazuran Clonidine Impurity 19 50% Thifenuron wettable powder thiabenuron N-Phenyl-N-1, 2, 3-Anilidothiobiazole-5-Carbamide Thifenuron 50% WP Thidiazuron Solution in Methanol