CAS 56-53-1

Diethylstilbestrol

Description:

Diethylstilbestrol (DES) is a synthetic nonsteroidal estrogen that was first synthesized in the 1930s. It is characterized by its chemical structure, which consists of two ethyl groups attached to a stilbene backbone, making it a member of the stilbestrol family. DES is a white crystalline powder that is poorly soluble in water but soluble in organic solvents. It was historically used in medicine to prevent pregnancy complications and treat certain cancers, but its use has been largely discontinued due to significant health risks. Notably, DES exposure during pregnancy has been linked to a range of adverse effects in offspring, including reproductive tract abnormalities and increased cancer risk. The substance has a relatively long half-life in the body, which contributes to its prolonged effects. Due to its endocrine-disrupting properties, DES is classified as a hazardous substance, and its use is strictly regulated in many countries. Its legacy continues to influence discussions on hormone therapies and the safety of synthetic estrogens in medicine.

Formula: C₁₈H₂₀O₂

InChI: InChI=1/C18H20O2/c1-3-17(13-5-9-15(19)10-6-13)18(4-2)14-7-11-16(20)12-8-14/h5-12,19-20H,3-4H2,1-2H3/b18-17-

InChI key: InChIKey=RGLYKWWBQGJZGM-ISLYRVAYSA-N

SMILES: C(=C(/CC)\C1=CC=C(O)C=C1)(\CC)/C2=CC=C(O)C=C2

Synonyms:

• (E)-3,4-Bis(4-hydroxyphenyl)-3-hexene
• (E)-4,4'-(1,2-Diethyl-1,2-ethenediyl)bisphenol
• (E)-Diethylstilbestrol
• 4,4'-(3E)-hex-3-ene-3,4-diyldiphenol
• 4,4'-(3Z)-hex-3-ene-3,4-diyldiphenol
• 4,4'-Dihydroxy-α,β-diethylstilbene
• 4,4'-Dihydroxydiethylstilbene
• 4,4'-Stilbenediol, α,α'-diethyl-, (E)-
• 4,4'-Stilbenediol, α,α'-diethyl-, trans-
• 4,4′-[(1E)-1,2-Diethyl-1,2-ethenediyl]bis[phenol]
• Agostilben
• Antigestil
• Atovaquone
• Bertrol
• Bio-des
• Bufon
• Comestrol
• Cyren
• Cyren A
• DEB
• DES
• DES (synthetic estrogen)
• Dawe's destrol
• Dawe's destrol solution
• Di-Estryl
• DiBestrol 2 Premix
• Diethylstilbesterol
• Diethylstilbestrol BP
• Diethylstilbestrol, Mixture Of Cis And Trans
• Dietilestilbestrol
• Distilbene
• Domestrol
• Estilbin MCO
• Estrobene
• Estrogenine
• Estromenin
• Estrosyn
• Fonatol
• Grafestrol
• Hi-Bestrol
• Iscovesco
• Menostilbeen
• Microest
• Milestrol
• Neo-Oestranol I
• Nsc 3070
• Oestrogenine
• Oestromenin
• Oestromensyl
• Oestromon
• Pabestrol
• Palestrol
• Phenol, 4,4'-(1,2-diethyl-1,2-ethenediyl)bis-, (E)-
• Phenol, 4,4'-[(1E)-1,2-diethyl-1,2-ethenediyl]bis-
• Rumestrol 1
• Rumestrol 2
• Serral
• Sexocretin
• Sibol
• Stil
• Stil-Rol
• Stilbestrol
• Stilbetin
• Stilboefral
• Stilboestroform
• Stilboestrol
• Stilkap
• Synestrin
• Synthoestrin
• Synthofolin
• Syntofolin
• Vagestrol
• a,a-Diethyl-4,4-Stilbenediol Carc.
• trans-4,4'-Dihydroxy-α,β-diethylstilbene
• trans-Diethylstilbestrol
• trans-α,α'-Diethyl-4,4'-stilbenediol
• trans-α,α′-Diethyl-4,4′-dihydroxystilbene
• α,α'-Diethyl-4,4'-stilbenediol
• α,α'-Diethylstilbenediol
• 3,4-BIS(P-HYDROXYPHENYL)-3-HEXENE
• 4,4'-DIHYDROXY-ALPHA,BETA-DIETHYLSTILBENE
• DIETHYLSTILBESTROL
• ALPHA-DIETHYLSTILBENEDIOL
• ALPHA
• LABOTEST-BB LT00233101
• ALPHA,ALPHA'-DIETHYL-(E)-4,4'-STILBENEDIOL

Diethylstilbestrol

CAS: 56-53-1

Color and Shape: Neat

Ref: 61-FOR1628.00

Diethylstilbestrol

CAS: 56-53-1

Diethylstilbestrol

Formula: C₁₈H₂₀O₂

Purity: 99.4%

Color and Shape: White Solid

Molecular weight: 268.14633

Ref: 47-859

Diethylstilbestrol

CAS: 56-53-1

Polyphenols, nesoi

Formula: C₁₈H₂₀O₂

Color and Shape: White Powder

Molecular weight: 268.14633

Ref: 45-1195001

Diethylstilbestrol

CAS: 56-53-1

Diethylstilbestrol (DES) is used in the treatment of menopausal and postmenopausal disorders.

Formula: C₁₈H₂₀O₂

Purity: 97.77% - 98.78%

Color and Shape: White Crystalline Powder Physical Description Odorless Tasteless White Crystalline Powder (Ntp 1992)

Molecular weight: 268.35

Ref: TM-T1216

Diethylstilbestrol

CAS: 56-53-1

Diethylstilbestrol

Purity: ≥95%

Molecular weight: 268.35g/mol

Ref: 54-BUP17670

Diethylstilbestrol

CAS: 56-53-1

Formula: C₁₈H₂₀O₂

Molecular weight: 268.35

Ref: 7W-GL6154

Diethylstilbestrol

CAS: 56-53-1

Formula: C₁₈H₂₀O₂

Color and Shape: Off-White Solid

Molecular weight: 268.36

Ref: 4Z-D-731

Diethylstilbestrol

Controlled Product

CAS: 56-53-1

Formula: C₁₈H₂₀O₂

Color and Shape: Neat

Molecular weight: 268.35

Ref: 04-C12607000

GB 31660.2-2019 Antibiotics Mixture 168 30-100 µg/mL in Methanol

Controlled Product

CAS: 140-66-9, 25154-52-3, 50-27-1, 50-28-2, 53-16-7, 56-53-1, 57-63-6, 80-05-7

Color and Shape: Mixture

Ref: 04-A50000168ME

Diethylstilbestrol

Controlled Product

CAS: 56-53-1

Formula: C₁₈H₂₀O₂

Color and Shape: Neat

Molecular weight: 268.35

Ref: 86-MM1628.00

trans-Diethyl Stilbestrol

Controlled Product

CAS: 56-53-1

Stability And Ether., Chloroform, Isomerizes Rapidly In Benzene
Applications A synthetic, nonsteroidal estrogen.Recomended solvents are DMSO, DMF and ethanol, even in these solvents do not store in solution for any prolonged period of time.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References White, W. A. et. al.: J. Agric. Food Chem. 19(2), 388-390 (1971).

Formula: C₁₈H₂₀O₂

Color and Shape: Neat

Molecular weight: 268.35

Ref: TR-D445026

Diethyl stilbestrol

CAS: 56-53-1

Formula: C₁₈H₂₀O₂

Purity: 99%

Color and Shape: Solid

Molecular weight: 268.356

Ref: 10-F240482