ChemicalBook > CAS DataBase List > BISPYRAZOLONE

BISPYRAZOLONE

Product Name: BISPYRAZOLONE
CAS No.: 7477-67-0
Chemical Name: BISPYRAZOLONE
Synonyms: NSC 37393;NSC 401001;BISPYRAZOLONE;edaravone diMer;Bispyrazolone, GR;Bispyrazolone, 98+%;Edaravone impurity Ⅰ;Edaravone IMpurity IV;LABOTEST-BB LT00008461;Edaravone DiMer IMpurity
CBNumber: CB0360601
Molecular Formula: C20H18N4O2
Formula Weight: 346.38
MOL File: 7477-67-0.mol

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BISPYRAZOLONE Property

Melting point:: 355 °C
Boiling point:: 481.12°C (rough estimate)
Density: 1.31
refractive index: 1.6620 (estimate)
storage temp.: Refrigerator
solubility: formic acid: 50 mg/mL, clear, yellow
pka: 2.15±0.70(Predicted)
form: crystalline
color: tan
BRN: 572787
CAS DataBase Reference: 7477-67-0(CAS DataBase Reference)
EPA Substance Registry System: [4,4'-Bi-3H-pyrazole]-3,3'-dione, 2,2',4,4'-tetrahydro-5,5'-dimethyl-2,2'-diphenyl- (7477-67-0)

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Safety

Hazard Codes: Xi
Risk Statements: 43
Safety Statements: 36/37
WGK Germany: 3
TSCA: Yes
HS Code: 29331990

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H317May cause an allergic skin reaction

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P272Contaminated work clothing should not be allowed out of the workplace.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P321Specific treatment (see … on this label).

P333+P313IF SKIN irritation or rash occurs: Get medical advice/attention.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 15156
Product name: Bispyrazolone
Purity: for TLC derivatization, for the det.of cyanide, ≥98.0%
Packaging: 5g
Price: $53.4
Updated: 2025/07/31

TCI Chemical

Product number: B0508
Product name: Bis(3-methyl-1-phenyl-5-pyrazolone) [for Determination of CN, Vitamin B12, etc]
Purity: >97.0%(T)
Packaging: 25g
Price: $103
Updated: 2025/07/31

TCI Chemical

Product number: B0508
Product name: Bis(3-methyl-1-phenyl-5-pyrazolone) [for Determination of CN, Vitamin B12, etc]
Purity: >97.0%(T)
Packaging: 250g
Price: $570
Updated: 2025/07/31

TRC

Product number: B524200
Product name: Bispyrazolone
Packaging: 1g
Price: $55
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FB75456
Product name: Bis(3-methyl-1-phenyl-5-pyrazolone)
Packaging: 1g
Price: $52.8
Updated: 2021/12/16

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BISPYRAZOLONE Chemical Properties,Usage,Production

Chemical Properties

off-white to cream-yellowish crystalline powder

Uses

It is applied as a reagent for the detection and determination of cyanide. It is also used in an experimental procedure, done in order to remove linamarin in starch from cassava roots, by using plant cell wall-degrading enzymes, xylanase and cellulase. It was also used for spectrophotometric determination and quantization of urea in urine samples. It is also used in assay of cyanogenic compounds and determination of ammonia.

Uses

Bispyrazolone is an impurity of Edaravone (E335000).

BISPYRAZOLONE Preparation Products And Raw materials

Raw materials

Ethyl acetoacetate N-Bromosuccinimide Sodium acetate trihydrate Acetic acid Phenylhydrazine

Preparation Products

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BISPYRAZOLONE Suppliers

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View Lastest Price from BISPYRAZOLONE manufacturers

Hebei Chuanghai Biotechnology Co., Ltd

Product: BISPYRAZOLONE 7477-67-0
Price: US $0.00-0.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 500000kg
Release date: 2024-10-29

Hebei Yanxi Chemical Co., Ltd.

Product: BISPYRAZOLONE 7477-67-0
Price: US $100.00/KG
Min. Order: 1KG
Purity: 0.99
Supply Ability: 500kg per day
Release date: 2023-09-04

Zhuozhou Wenxi import and Export Co., Ltd

Product: BISPYRAZOLONE 7477-67-0
Price: US $15.00-10.00/KG
Min. Order: 1KG
Purity: 99%+ HPLC
Supply Ability: Monthly supply of 1 ton
Release date: 2021-08-11

7477-67-0, BISPYRAZOLONERelated Search:

1,2-Dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one 1H-Pyrazole, 5-methoxy-3-methyl-1-phenyl- Acetyl ketene Edaravone Impurity 14 Edaravone Impurity 26 Edaravone Impurity 5 Edaravone Impurity 8 ethyl 3-acetoxy-2-butenoate Edaravone Impurity 15 Edaravone Impurity 19 1H-Pyrazole,3-ethoxy-5-methyl-1-phenyl-(9CI) Edaravone Impurity 6 NSC4751 Edaravone 5-Oxo-1-phenyl-2-pyrazolin-3-carboxylic acid benzenediazonium chloride 4,5-Dihydro-α,3-diMethyl-5-oxo-1-phenyl-α-sulfo-1H-pyrazole-4-acetic Acid Edaravone Impurity 11

BIS(3-METHYL-1-PHENYL-5-PYRAZOLONE)

BIS(1-PHENYL-3-METHYL-5-PYRAZOLONE)

BISPYRAZOLONE

LABOTEST-BB LT00008461

4,4'-BIS(3-METHYL-1-PHENYL-5-PYRAZOLONE)

4,4'-BIS(1-PHENYL-3-METHYL-5-PYRAZOLONE)

3,3-DIMETHYL-1,1-DIPHENYL-(4,4-BI-2-PYRAZOLINE)-5,5-DIONE

3,3'-DIMETHYL-1,1'-DIPHENYL-[4,4'-BI-2-PYRAZOLINE]-5,5'-DIONE

3,3'-DIMETHYL-1,1'-DIPHENYL-4,4'-BI(5-PYRAZOLONE)

3,3'-DIMETHYL-1,1'-DIPHENYL-[4,4'-BIS-2-PYRAZOLINE]-5,5'-DIONE

3,3'-DIMETHYL-1,1'-DIPHENYL-4,4'-DI-2-PYRAZOLINE-5,5'-DIONE

[4,4’-bi-3h-pyrazole]-3,3’-dione,2,2’,4,4’-tetrahydro-5,5’-dimethyl-2,2’-diphe

Edaravone Impurity 16 (Bis-pyrazolone)

4,4'-Bis(1-phenyl-3-methyl-5-pyrazolone/3,3'-Dimethyl-1,1'-diphenyl[4,4'-bi-1H-pyrazole]

Edaravone Impurity Ⅰ:2,2',4,4'-Tetrahydro-5,5'-dimethyl-2,2'-diphenyl-[4,4'-Bi-3H-pyrazole]-3,3'-dione

[4,4’-bi-3H-Pyrazole]-3,3’-dione,2,2’,4,4’-tetrahydro-5,5’-dimethyl-2,2’-diphenyl-

4’-bi-3H-Pyrazole]-3,3’-dione,2,2’,4,4’-tetrahydro-5,5’-dimethyl-2,2’-diphenyl-[4

Bis(1-phenyl-3-methyl-5-pyrazo

BISPYRAZOLONE, FOR THE DETECTION OF CYAN IDE

4,4'-BIS(3-METHYL-1-PHENYL-5-PYRAZOLONE)[FOR DETERMINATION OF CN, VITAMIN B12, ETC] 97+%

BISPYRAZOLONE(4,4''-BIS-(3-METHYL-1-PHENYL-5-PYRAZOLONE))

2,2',4,4'-tetrahydro-5,5'-dimethyl-2,2'-diphenyl-[4,4'-bi-3H-Pyrazole]-3,3'-dione

3,3-DIMETHYL-1,1''-DIPHENYL[4,4''-BI-2-PYRAZOLINE]-5,5''-DIONE 98%

3,3'-Dimethyl-1,1'-diphenyl-4,4'-bi(2-pyrazolin-5-one)

3,3'-Dimethyl-1,1'-diphenyl[4,4'-bi-2-pyrazoline]-5,5'-dione,98%

Bispyrazolone,3,3′-Dimethyl-1,1′-diphenyl-(4,4′-bi-2-pyrazoline)-5,5′-dione

Bispyrazolone, 98+%

Bis(3-Methyl-1-phenylpyrazol-5-one)

NSC 37393

NSC 401001

Bispyrazolone 3,3'-Dimethyl-1,1'-diphenyl-4,4'-bi(5-pyrazolone)

[for DeterMination of CN, VitaMin B12, etc]

Bis(3-Methyl-1-phenyl-5-pyrazolone)&nbsp

edaravone diMer

edaravone related substance A

Edaravone DiMer IMpurity

3,3'-diMethyl-1,1'-diphenyl-1H,1'H-[4,4'-bipyrazole]-5,5'(4H,4'H)-dione

4,4'-Bis(3-Methyl-1-phenyl-5-pyrazolone), for analysis

Edaravone IMpurity IV

Bis(3-methyl-1-phenyl-5-pyrazolone) [for Determination of CN, Vitamin B12, etc]

3,3'-Dimethyl-1,1'-diphenyl[4,4'-bi-2-pyrazoline]-5,5'-dione Bis-pyrazolone Bis(3-methyl-1-phenyl-5-pyrazolone)

4,4'-Bis(3-methyl-1-phenyl-5-pyrazolone), 97%, for analysis

Edaravone Impurity IV (Bispyrazolone)

Bis(3-methyl-1-phenyl-5-pyrazolone)[forDeterminationofCN,VitaminB12,etc]&gt

Bispyrazolone, GR

Edaravone Impurity Ⅰ:2,2’,4,4’-Tetrahydro-5,5’-dimethyl-2,2’-diphenyl-[4,4’-Bi-3H-pyrazole]-3,3’-dione

5-methyl-4-(3-methyl-5-oxo-1-phenyl-4H-pyrazol-4-yl)-2-phenyl-4H-pyrazol-3-one

Bispyrazolone, Technical, Fisher Chemical

Bis(3-methyl-1-phenyl-5-pyrazolone), for Determination of CN, Vitamin B12, etc，≥ 97.0%

3,3’-Dimethyl-1,1’-diphenyl-[4,4’-bi-2-pyrazoline]-5,5’-dione

4,4’-Bis(1-phenyl-3-methyl-5-pyrazolone/3,3’-Dimethyl-1,1’-diphenyl[4,4’-bi-1H-pyrazole

Edaravone impurity Ⅰ

3,3'-Dimethyl-1,1'-diphenyl-1H,1'H-[4,4'-bipyrazole]-5,5'(4H,4'H)-dione (Edaravone Impurity)

3,3'-dimethyl-1,1'-diphenyl-4,4'-bi-5-pyrazolone

Bispyrazolone, 10 mM in DMSO

3,3'-Dimethyl-1,1'-diphenyl-1H,1'H-[4,4'-bipyrazole]-5,5'(4H,4'H)-dione (Edaravone Impurity)

Edaravone Dimer: 5,5'-Dimethyl-2,2'-diphenyl-2,2',4,4'-tetrahydro-3H,3'H-[4,4'-bipyrazole]-3,3'-dione

7477-67-0