4-PREGNEN-20-ALPHA-OL-3-ONE
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- $185 - $4725
- Product name: 4-PREGNEN-20-ALPHA-OL-3-ONE
- CAS: 145-14-2
- MF: C21H32O2
- MW: 316.48
- EINECS:205-649-5
- MDL Number:MFCD00009823
- Synonyms:4-PREGNEN-20-ALPHA-OL-3-ONE;20-ALPHA-DIHYDROPROGESTERONE;20-ALPHA-HYDROXY-4-PREGNEN-3-ONE;20-ALPHA-HYDROXYPROGESTERONE;(20s)-pregn-4-en-3-on ;20(s)-hydroxyprogesterone ;20-alpha-hydroxydihydroprogesterone ;20-alpha-hydroxy-pregn-4-en-3-on
24 prices
Selected condition：
Brand
- aablocks
- AHH
- American Custom Chemicals Corporation
- Biosynth
- Chemenu
- ChemScene
- Matrix Scientific
- Medical Isotopes, Inc.
- Sigma-Aldrich
- TRC
- Usbiological
Package
- 1mg
- 2mg
- 5mg
- 10mg
- 25MG
- 50mg
- 100mg
- 250MG
- 0.5g
- 1g
- Manufactureraablocks
- Product numberAA001KCZ
- Product description20α-Dihydroprogesterone >98%
- Packaging5mg
- Price$302
- Updated2026-05-28
- Buy
- Manufactureraablocks
- Product numberAA001KCZ
- Product description20α-Dihydroprogesterone >98%
- Packaging10mg
- Price$458
- Updated2026-05-28
- Buy
- ManufacturerAHH
- Product numberMT-21633
- Product description4-Pregnen-20-alpha-ol-3-one 97%
- Packaging0.5g
- Price$430
- Updated2026-05-26
- Buy
- ManufacturerAmerican Custom Chemicals Corporation
- Product numberMTB0000004
- Product description4-PREGNEN-20-ALPHA-OL-3-ONE 95.00%
- Packaging250MG
- Price$1732.5
- Updated2021-12-16
- Buy
- ManufacturerAmerican Custom Chemicals Corporation
- Product numberMTB0000004
- Product description4-PREGNEN-20-ALPHA-OL-3-ONE 95.00%
- Packaging25MG
- Price$721.88
- Updated2021-12-16
- Buy
- ManufacturerBiosynth
- Product numberFP29553
- Product description4-Pregnen-20-alpha-ol-3-one
- Packaging2mg
- Price$631.38
- Updated2026-06-04
- Buy
- ManufacturerBiosynth
- Product numberFP29553
- Product description4-Pregnen-20-alpha-ol-3-one
- Packaging1mg
- Price$426.18
- Updated2026-06-04
- Buy
- ManufacturerBiosynth
- Product numberFP29553
- Product description4-Pregnen-20-alpha-ol-3-one
- Packaging5mg
- Price$1169.25
- Updated2026-06-04
- Buy
- ManufacturerBiosynth
- Product numberFP29553
- Product description4-Pregnen-20-alpha-ol-3-one
- Packaging10mg
- Price$1732.2
- Updated2026-06-04
- Buy
- ManufacturerChemenu
- Product numberCM283195
- Product description20a-Hydroxypregn-4-en-3-one 95%
- Packaging1g
- Price$1865
- Updated2026-05-26
- Buy
- ManufacturerChemScene
- Product numberCS-0059471
- Product description20α-Dihydroprogesterone ≥98%
- Packaging5mg
- Price$260
- Updated2026-06-04
- Buy
- ManufacturerChemScene
- Product numberCS-0059471
- Product description20α-Dihydroprogesterone ≥98%
- Packaging10mg
- Price$412
- Updated2026-06-04
- Buy
- ManufacturerMatrix Scientific
- Product number099438
- Product description20a-Hydroxypregn-4-en-3-one 95+%
- Packaging1g
- Price$4725
- Updated2021-12-16
- Buy
- ManufacturerMedical Isotopes, Inc.
- Product number72135
- Product descriptiondelta4-Pregnen-20α-ol-3-one
- Packaging25mg
- Price$650
- Updated2021-12-16
- Buy
- ManufacturerSigma-Aldrich
- Product numberPHR8935
- Product description(20S)-20-Hydroxypregn-4-en-3-one Pharmaceutical Secondary Standard; Certified Reference Material
- Packaging100mg
- Price$1060
- Updated2026-04-30
- Buy
- ManufacturerTRC
- Product numberTRC-P712215-50MG
- Product descriptiondelta4-Pregnen-20alpha-ol-3-one >95%(HPLC)
- Packaging50mg
- Price$2175
- Updated2026-06-03
- Buy
| Manufacturer | Product number | Product description | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|
| aablocks | AA001KCZ | 20α-Dihydroprogesterone >98% | 5mg | $302 | 2026-05-28 | Buy |
| aablocks | AA001KCZ | 20α-Dihydroprogesterone >98% | 10mg | $458 | 2026-05-28 | Buy |
| AHH | MT-21633 | 4-Pregnen-20-alpha-ol-3-one 97% | 0.5g | $430 | 2026-05-26 | Buy |
| American Custom Chemicals Corporation | MTB0000004 | 4-PREGNEN-20-ALPHA-OL-3-ONE 95.00% | 250MG | $1732.5 | 2021-12-16 | Buy |
| American Custom Chemicals Corporation | MTB0000004 | 4-PREGNEN-20-ALPHA-OL-3-ONE 95.00% | 25MG | $721.88 | 2021-12-16 | Buy |
| Biosynth | FP29553 | 4-Pregnen-20-alpha-ol-3-one | 2mg | $631.38 | 2026-06-04 | Buy |
| Biosynth | FP29553 | 4-Pregnen-20-alpha-ol-3-one | 1mg | $426.18 | 2026-06-04 | Buy |
| Biosynth | FP29553 | 4-Pregnen-20-alpha-ol-3-one | 5mg | $1169.25 | 2026-06-04 | Buy |
| Biosynth | FP29553 | 4-Pregnen-20-alpha-ol-3-one | 10mg | $1732.2 | 2026-06-04 | Buy |
| Chemenu | CM283195 | 20a-Hydroxypregn-4-en-3-one 95% | 1g | $1865 | 2026-05-26 | Buy |
| ChemScene | CS-0059471 | 20α-Dihydroprogesterone ≥98% | 5mg | $260 | 2026-06-04 | Buy |
| ChemScene | CS-0059471 | 20α-Dihydroprogesterone ≥98% | 10mg | $412 | 2026-06-04 | Buy |
| Matrix Scientific | 099438 | 20a-Hydroxypregn-4-en-3-one 95+% | 1g | $4725 | 2021-12-16 | Buy |
| Medical Isotopes, Inc. | 72135 | delta4-Pregnen-20α-ol-3-one | 25mg | $650 | 2021-12-16 | Buy |
| Sigma-Aldrich | PHR8935 | (20S)-20-Hydroxypregn-4-en-3-one Pharmaceutical Secondary Standard; Certified Reference Material | 100mg | $1060 | 2026-04-30 | Buy |
| TRC | TRC-P712215-50MG | delta4-Pregnen-20alpha-ol-3-one >95%(HPLC) | 50mg | $2175 | 2026-06-03 | Buy |
Properties
Melting point :171-172 °C
Boiling point :451.7±14.0 °C(Predicted)
Density :1.13 g/cm3
storage temp. :Refrigerator
solubility :Chloroform (Slightly), Ethanol (Slightly), Methanol (Slightly)
form :Solid
pka :15.05±0.20(Predicted)
color :White to Off-White
InChI :InChI=1S/C21H32O2/c1-13(22)17-6-7-18-16-5-4-14-12-15(23)8-10-20(14,2)19(16)9-11-21(17,18)3/h12-13,16-19,22H,4-11H2,1-3H3/t13-,16-,17+,18-,19-,20-,21+/m0/s1
InChIKey :RWBRUCCWZPSBFC-RXRZZTMXSA-N
SMILES :C1(=O)C=C2[C@](C)(CC1)[C@]1([H])[C@]([H])([C@@]3([H])[C@@](CC1)(C)[C@@H]([C@@H](O)C)CC3)CC2
Boiling point :451.7±14.0 °C(Predicted)
Density :1.13 g/cm3
storage temp. :Refrigerator
solubility :Chloroform (Slightly), Ethanol (Slightly), Methanol (Slightly)
form :Solid
pka :15.05±0.20(Predicted)
color :White to Off-White
InChI :InChI=1S/C21H32O2/c1-13(22)17-6-7-18-16-5-4-14-12-15(23)8-10-20(14,2)19(16)9-11-21(17,18)3/h12-13,16-19,22H,4-11H2,1-3H3/t13-,16-,17+,18-,19-,20-,21+/m0/s1
InChIKey :RWBRUCCWZPSBFC-RXRZZTMXSA-N
SMILES :C1(=O)C=C2[C@](C)(CC1)[C@]1([H])[C@]([H])([C@@]3([H])[C@@](CC1)(C)[C@@H]([C@@H](O)C)CC3)CC2
Safety Information
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Description
Δ4-Pregnen-20α-ol-3-one (Progesterone EP Impurity B) is the main metabolite of Progesterone (P755900). Studies shows regulation of estrogen receptor levels in breast cancer by Δ4-Pregnen-20α-ol-3-one and other progesterone metabolites.More related product prices
Hydroxyprogesterone 4-PREGNEN-20-BETA-OL-3-ONE 20α-Acetoxy-4-pregnen-3-oneRelated product price
-
Hydroxyprogesterone
$10-3280.2 -
4-PREGNEN-20-BETA-OL-3-ONE
$145-2200 -
20α-Acetoxy-4-pregnen-3-one
$194-1585
Suppliers and manufacturers
Moxin Chemicals
Standardpharm Co. Ltd.
BOC Sciences
Hefei Hangang Pharmaceutical Technology Co., Ltd.
Career Henan Chemica Co
Shaanxi Dideu Medichem Co. Ltd
CR Corporation Limited
Shenzhen Excellent Biomedical Technology Co.,Ltd.
HANGZHOU LEAP CHEM CO., LTD.
Sinco Pharmachem (ShenZhen) R&D Co., Ltd.
Progesterone EP Impurity B
CAS:145-14-2