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trans-1,2-Cyclopentanediol

trans-1,2-Cyclopentanediol structure

CAS No.: 5057-99-8

Chemical Name:: trans-1,2-Cyclopentanediol

Synonyms: Cyclopentane-1,2-diol;1,2-Cyclopentanediol;(1R,2R)-Cyclopentane-1,2-diol;TRANS-1,2-CYCLOPENTANEDIOL;trans-Cyclopentanediol-1,2;trans-cyclopentane-1,2-diol;(1S)-1α,2β-Cyclopentanediol;rel-Cyclopentane-1β*,2α*-diol;(±)-trans-1,2-Cyclopentanediol;trans-1,2-Dihydroxycyclopentane

CBNumber:: CB0433879

Molecular Formula:: C5H10O2

Molecular Weight:: 102.13

MDL Number:: MFCD00082582

MOL File:: 5057-99-8.mol

MSDS File:: SDS

Last updated:2026-05-27 22:40:08

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trans-1,2-Cyclopentanediol Properties

Melting point	54-56 °C(lit.)
Boiling point	136 °C21.5 mm Hg(lit.)
Density	1.235
refractive index	1.
Flash point	>230 °F
storage temp.	2-8°C
pka	14.48±0.40(Predicted)
form	gel/ oil
color	Light yellow
Stability	Stable. Combustible. Incompatible with strong oxidizing agents.
InChI	InChI=1/C5H10O2/c6-4-2-1-3-5(4)7/h4-7H,1-3H2/t4-,5-/s3
InChIKey	VCVOSERVUCJNPR-RFZPGFLSSA-N
SMILES	[C@@H]1(O)CCC[C@H]1O \|&1:0,5,r\|
CAS DataBase Reference	5057-99-8
UNSPSC Code	12352100
NACRES	NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)	GHS07
Signal word	Warning
Hazard statements	H319
Precautionary statements	P305+P351+P338
PPE	Eyeshields, Gloves, type N95 (US)
Safety Statements	22-24/25
WGK Germany	3
F	3-4.3-10
HS Code	2906190090
Storage Class	11 - Combustible Solids

trans-1,2-Cyclopentanediol price More Price(36)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	361445	(±)-trans-1,2-Cyclopentanediol 97%	5057-99-8	5g	$399	2026-04-30	Buy
Sigma-Aldrich	361445	(±)-trans-1,2-Cyclopentanediol 97%	5057-99-8	1g	$101	2023-06-20	Buy
TCI Chemical	C3885	(±)-trans-Cyclopentane-1,2-diol min. 98.0 %	5057-99-8	1G	$71	2026-04-30	Buy
TCI Chemical	C3885	(±)-trans-Cyclopentane-1,2-diol min. 98.0 %	5057-99-8	5G	$213	2026-04-30	Buy
Biosynth	FAA05799	(+/-)-Trans-1,2-cyclopentanediol	5057-99-8	5g	$413	2026-06-04	Buy

Product number	Packaging	Price	Buy
361445	5g	$399	Buy
361445	1g	$101	Buy
C3885	1G	$71	Buy
C3885	5G	$213	Buy
FAA05799	5g	$413	Buy

trans-1,2-Cyclopentanediol Chemical Properties,Uses,Production

Chemical Properties

off-white crystalline powder

Uses

(1R,2R)-rel-trans-1,2-Cyclopentanediol is a building block for the synthesis of chiral phosphine ligands. It can also be used to prepare benzoquinolines and benzoindoles via heterocyclization of naphthylamines with diols catalyzed by iridium chloride/BINAP.

trans-1,2-Cyclopentanediol synthesis

Synthesis of trans-1,2-Cyclopentanediol from Cyclopentene

trans-1,2-Cyclopentanediol Preparation Products And Raw materials

Raw materials

1,2-Dibromocyclopentane Cyclopentene oxide Cyclopentene tert-Butanol Glutaraldehyde

Preparation Products

cis-1,2-Cyclopentanediol Cyclopentane

trans-1,2-Cyclopentanediol Suppliers

Global( 66)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Chongqing TianyiHenghua Technology Co., Ltd.	15086758486; 15086758486	chemtyhh@163.com	China	93	58
J & K SCIENTIFIC LTD.	18210857532 18210857532	jkinfo@jkchemical.com	China	96815	76
Energy Chemical	400-0056266	sales8178@energy-chemical.com	China	44850	61
Accela ChemBio Co.,Ltd.	021-50795510 4000665055	marketing@accelachem.com	China	10972	64
Shanghai Hanhong Scientific Co.,Ltd.	021-54306202 13764082696	info@hanhongsci.com	China	42917	64
Shanghai JONLN Reagent Co., Ltd.	400-0066400 13621662912	422131432@qq.com	China	9970	55
Bide Pharmatech Ltd.	400-164-7117 18317119277	product02@bidepharm.com	China	40000	60
Shanghai HuanChuan Industry Co.,Ltd.	021-61478794	sales@hcshhai.com	China	9781	50
Cool Pharm, Ltd	021-60455363 18019463053	sales@coolpharm.com	China	8455	58
Sigma-Aldrich	021-61415566 800-8193336	orderCN@merckgroup.com	China	51389	80

Supplier	Advantage
Chongqing TianyiHenghua Technology Co., Ltd.	58
J & K SCIENTIFIC LTD.	76
Energy Chemical	61
Accela ChemBio Co.,Ltd.	64
Shanghai Hanhong Scientific Co.,Ltd.	64
Shanghai JONLN Reagent Co., Ltd.	55
Bide Pharmatech Ltd.	60
Shanghai HuanChuan Industry Co.,Ltd.	50
Cool Pharm, Ltd	58
Sigma-Aldrich	80

trans-1,2-Cyclopentanediol Spectrum

(+/-)-TRANS-1,2-CYCLOPENTANEDIOL(5057-99-8)¹HNMR (+/-)-TRANS-1,2-CYCLOPENTANEDIOL(5057-99-8)Raman (+/-)-TRANS-1,2-CYCLOPENTANEDIOL(5057-99-8)IR (+/-)-TRANS-1,2-CYCLOPENTANEDIOL(5057-99-8)FT-IR

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TRANS-1,2-CYCLOPENTANEDIOL 1,2-Cyclopentanediol trans-cyclopentane-1,2-diol trans-Cyclopentanediol-1,2 rel-(1R*,2R*)-1,2-Cyclopentanediol rel-(1S*,2S*)-Cyclopentane-1,2-diol rel-1β*,2α*-Dihydroxycyclopentane rel-Cyclopentane-1β*,2α*-diol (1S)-1α,2β-Cyclopentanediol trans-1,2-Dihydroxycyclopentane (1R,2R)-Cyclopentane-1,2-diol (1R,2R)-rel-Cyclopentane-1,2-diol (1R,2R)-rel-trans-1,2-Cyclopentanediol (+/-)-trans-1,2-Cyclopentanediol 97% 1,2-Cyclopentanediol, (1R,2R)-rel- (+/-)-Trans-1,2-cyclopentanediol (±)-trans-1,2-Cyclopentanediol (±)-trans-1,2-Cyclopentanediol (±)-trans-1,2-Cyclopentanediol Cyclopentane-1,2-diol (±)-trans-Cyclopentane-1,2-diol 5057-99-8 Building Blocks Organic Building Blocks Oxygen Compounds Polyols Organic Building Blocks Oxygen Compounds Polyols