PHENYLETHYLENECARBOXYLIC ACID

Benzenepropenoic acid

Benzylideneacetic acid

Acidum cinnamylicum

Benzeneacrylic acid

Zimtsaeure

Phenylacrylic acid

WBYWAXJHAXSJNI-VOTSOKGWSA-N

Cinnamylic acid

Isocinnamic acid

PhCH=CHCO2H

trans-beta-Carboxystyrene

trans-Cinnamate

trans-Zimtsaeure

beta-Phenylacrylic acid

CINNAMIC ACID

trans-b-Carboxystyrene

Cinnamic Acid Natural

trans-3-Phenylpropensaeure

trans cinnamic acid

TRANS-CINNAMIC ACID

Zimtsaeure | trans-Cinnamate

3-Phenylpropenoic acid

trans-3-Phenylacrylate

3-Phenylacrylic acid

E-Cinnamic Acid

t-Cinnamic acid

trans-3-Phenylacrylic acid

trans-Cinnamic acid, analytical standard

AC1L9GI1

AC1Q5T9E

AC1Q71HQ

E-3-phenylpropenoic acid

Zimtsaeure [German]

Kyselina skoricove [Czech]

SCHEMBL1332

trans-.beta.-Carboxystyrene

.beta.-Phenylacrylic acid

GTPL3203

M182

(E)-cinnamate

CHEMBL27246

Cinnamic acid (natural)

NSC9189

PubChem13612

BDBM16430

HMDB00930

N1877

tert-.beta.-Phenylacrylic acid

AS07055

BIDD:ER0586

LS00072

NE10311

NSC44010

RP17351

STR00363

WLN: QV1U1R

(E)-Cinnamic acid

3-Phenyl-2-propenoic acide

3-phenyl-2E-propenoic acid

bmse000124

C00423

C10438

CCRIS 3190

Cinnamic acid, E-

trans-3-Phenyl-2-propenoate

trans-Cinnamic acid, >=99%

U14A832J8D

(E)-3-Phenylacrylate

3-Phenyl-2-propenoic acid

3-phenylprop-2-enoic acid

AK114507

BT000153

DTXSID5022489

LS-2626

NSC 9189

NSC-9189

NSC623441

OR034426

OR195269

SBB028745

ST097455

STK286093

trans-Cinnamic acid, 97%

trans-Cinnamic acid, 99%

A833631

CHEBI:27386

CHEBI:35697

Cinnamic acid, United States Pharmacopeia (USP) Reference Standard

DSSTox_CID_2489

trans-3-Phenyl-2-propenoic acid

UNII-U14A832J8D

(E)-3-Phenylacrylic acid

4CN-0914

AB1002037

AJ-68078

AK-47839

AN-21994

AN-23168

BP-20203

DSSTox_GSID_22489

KB-61966

KB-76099

LS-54015

NSC 44010

NSC-44010

SC-24646

DSSTox_RID_76603

MFCD00004369

ZINC16051516

(2E)-3-phenylacrylic acid

AI3-00891

AI3-23709

CCG-214473

DB-003797

NSC-623441

RTR-005227

RTR-021011

ST24024695

TR-005227

TR-021011

AKOS000118871

I01-8768

Q-100150

S01-0256

W-105037

(E)-3-phenyl-acrylic acid

BRN 0507757

BRN 1905952

FEMA No. 2288

FT-0623829

FT-0655071

trans-Cinnamic acid, >=99%, FG

Cinnamic acid, (E)-

Tox21_112279

Tox21_302137

(E)-3-phenylprop-2-enoate

140-10-3

621-82-9

F2191-0134

(2E)-2-Phenyl-2-propenoate

(2E)-3-Phenyl-2-propenoate

(E)-3-Phenyl-2-propenoic acid

(E)-3-phenylprop-2-enoic acid

9045-22-1

NCGC00165979-01

NCGC00255114-01

AB00374254-03

CAS-140-10-3

EINECS 205-398-1

EINECS 210-708-3

(2E)-2-Phenyl-2-propenoic acid

(2E)-3-Phenyl-2-propenoic acid

(2E)-3-phenylprop-2-enoic acid

63938-16-9

SR-05000002380

trans-Cinnamic acid, 99% 100g

MolPort-000-881-745

trans-Cinnamic acid, natural, >=99%, FCC, FG

SR-05000002380-1

trans-Cinnamic acid, purum, >=99.0% (T)

2-Propenoic acid, 3-phenyl-, (E)-

4-09-00-02002 (Beilstein Handbook Reference)

2-Propenoic acid, 3-phenyl-, (2E)-

1BE36587-A165-4142-9340-18FFE3E03426

InChI=1/C9H8O2/c10-9(11)7-6-8-4-2-1-3-5-8/h1-7H,(H,10,11)/b7-6

Hydroxybenzenecarboxylic acid

parahydroxybenzoic acid

acidop-idrossibenzoico

Hydroxybenzoic acid

4-Hydroxybenzenecarboxylic acid

FJKROLUGYXJWQN-UHFFFAOYSA-N

4-Hydroxybenzoesaeure

4-Hydroxybenzoicacid

p-carboxyphenol

p-Oxybenzoesaure

p-Salicylicacid

para-Hydroxybenzoic acid

Acetysalicyclic acid impurity A

Acido p-idrossibenzoico

PHBA

Kyselina 4-hydroxybenzoova

p-Hydroxybenzoic acid

p-Salicylate

Paraben-acid

PHB

4-Carboxyphenol

p-hydroxy-Benzoate

para-salicylic acid

3pcc

3pch

4-Hydroxy-benzoesaeure

4-HYDROXYBENZOIC ACID

4-hydroxylbenzoic acid

benzoicacid,4-hydroxy

HYDROXYBENZOIC ACID, PARA

p-Salicyclic Acid

p-Salicylic acid

Para Hydroxy Benzoic Acid

4-hydroxy-benzoicaci

4-hyroxybenzoic acid

p-HBA

4-hydroxy-benzoate

p-hydroxy benzoic acid

p-hydroxy-Benzoic acid

AC1Q73EU

4-HBA

4-hydroxy benzoic acid

4-hydroxy-benzoic acid

4-Hydroxybenzoate, III

4-hydroxybenzoi c acid

4-hydroxyl benzoic acid

benzoicacid,4-hydroxy-

SCHEMBL4110

AC1L18K3

AC1Q1H26

Acido p-idrossibenzoico [Italian]

KSC173K8H

p-Oxybenzoesaure [German]

phenol derivative, 8

ACMC-209sel

Benzoic acid, p-hydroxy

LR-68

NSC4961

PubChem16819

BDBM26194

HMDB00500

JG8Z55Y12H

Kyselina 4-hydroxybenzoova [Czech]

WLN: QVR DQ

AC-008

AM87513

Benzoic acid, 4-hydroxy

BIDD:ER0706

CHEMBL441343

DB04242

NE10208

RP20404

bmse000092

bmse000583

C00156

CCRIS 8812

HSDB 7233

UNII-JG8Z55Y12H

ZINC332752

4-Hydroxybenzoic acid, pharmaceutical secondary standard; traceable to USP

AK106263

BBL011981

BC228180

Benzoic acid, p-hydroxy-

CS-D1180

DNC008509

DTXSID3026647

NSC 4961

NSC-4961

OR034017

OR182934

OR383012

SBB040549

STL138745

UNII-I3P9R8317T component FJKROLUGYXJWQN-UHFFFAOYSA-N

CHEBI:30763

DSSTox_CID_6647

4CN-0919

AB1002080

AJ-19561

AN-16204

ANW-41083

Benzoic acid, 4-hydroxy-

DSSTox_GSID_26647

KB-39154

LS-37525

SC-16333

ST2411467

TRA0058557

BB_NC-2308

DSSTox_RID_78173

MFCD00002547

4-Hydroxybenzoic acid, certified reference material, TraceCERT(R)

AI3-01003

RTR-007731

ST50210584

AKOS000119033

I04-1478

I14-7358

J-660066

Salicylic acid Related Compound A, United States Pharmacopeia (USP) Reference Standard

W-100004

FT-0618695

99-96-7

4-Hydroxybenzoic acid, >=99%, FG

Tox21_202342

Tox21_303301

F2191-0237

Z1259273385

CAS-99-96-7

4-Hydroxybenzoic acid, ReagentPlus(R), >=99%

MCULE-1367764897

NCGC00166040-01

NCGC00166040-02

NCGC00257058-01

NCGC00259891-01

4-Hydroxybenzoic acid, ReagentPlus(R), 99%

EINECS 202-804-9

4-Hydroxybenzoic acid, 98% 250g

4-Hydroxybenzoic acid, Vetec(TM) reagent grade, 99%

MolPort-000-871-606

44643-EP2281819A1

44643-EP2292619A1

44643-EP2298735A1

44643-EP2305659A1

44643-EP2311809A1

44643-EP2311818A1

AE-848/32195059

114-63-6 (mono-hydrochloride salt)

194587-EP2371808A1

BENZOIC-CARBOXY-13C ACID, 4-HYDROXY- (9CI)

16782-08-4 (mono-potassium salt)

4-Hydroxybenzoic acid, puriss., >=99.0% (T)

46DD083D-BFD3-4CE1-B2D9-6C6D5FEFD3D9

InChI=1/C7H6O3/c8-6-3-1-5(2-4-6)7(9)10/h1-4,8H,(H,9,10

The Henry's Law constant for 4-hydroxybenzoic acid is estimated as 7.2X10-12 atm-cu m/mole(SRC) derived from its extrapolated vapor pressure, 1.9X10-7 mm Hg(1), and water solubility, 5000 mg/L(2). This Henry's Law constant indicates that 4-hydroxybenzoic acid is expected to be essentially nonvolatile from water surfaces(3). 4-Hydroxybenzoic acid's estimated Henry's Law constant indicates that volatilization from moist soil surfaces is not expected to occur(SRC). In addition, 4-hydroxybenzoic acid's pKa value of 4.54(4) indicates that it will exist almost entirely as an anion at pH values of 5 to 9 and therefore volatilization from water and moist soil surfaces is not expected to be an important fate process(SRC). 4-Hydroxybenzoic acid is not expected to volatilize from dry soil surfaces(SRC) based upon its vapor pressure(1).
Literature: (1) Jones AH; J Chem Eng Data 5:196-200 (1960) (2) Yalkowsky SH, He Y, eds; Handbook of aqueous solubility data. Boca Raton, FL: CRC Press p. 377 (2003) (3) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington, DC: Amer Chem Soc pp. 15-1 to 15-29 (1990) (4) Bykova LN et al; Zh Obshch Khim 40: 2295-300 (1970)

Koc values of 142, 20, and 14 were measured according to a modified version of OECD guideline 106 for 4-hydroxybenzoic acid in a podzol (pH=2.8, C organic=4.85%, sand:silt:clay=89.2:8.2:2.6%), alfisol (pH=6.7, C organic=1.25%, sand:silt:clay=69.7:14.4:15.9%), and a sediment (pH=7.1, C organic=1.58%, sand:silt:clay=5.5:58.8:35.7%), respectively(1). According to a classification scheme(2), these Koc values suggest that 4-hydroxybenzoic acid is expected to have high to very high mobility in soil. The pKa of 4-hydroxybenzoic acid is 4.54(3), indicating that this compound will primarily exist in anion form in the environment and anions generally do not adsorb more strongly to organic carbon and clay than their neutral counterparts(4).
Literature: (1) Vonoepen B et al; Chemosphere 22: 285-304 (1991) (2) Swann RL et al; Res Rev 85: 17-28 (1983) (3) Bykova LN et al; Zh Obshch Khim 40: 2295-300 (1970) (4) Doucette WJ; pp. 141-188 in Handbook of Property Estimation Methods for Chemicals. Boethling RS, Mackay D, eds. Boca Raton, FL: Lewis Publ (2000)

protocatechuate

Protacatechuic Acid

protocatechuic acid

Protocatechuic acid polymer

Protocatechuic acid, primary pharmaceutical reference standard

Protocatehuic acid

YQUVCSBJEUQKSH-UHFFFAOYSA-N

beta-Resorcylate

b-Resorcylate

Oxidative polymer of protocatechuic acid

1ykp

4fht

AC1Q5TRL

Pyrocatechol-4-carboxylic Acid

3,4-Dihydroxybenzoicacid

Catechol-4-carboxylic Acid

3,4-dihydroxybenzoes

3,4-DIACETOXY-BENZOICACID

3,4-DIHYDROXYBENZOIC ACID

4,5-Dihydroxybenzoic acid

AC1L18F1

AC1Q732Z

KSC486M3D

ACMC-209scu

CHEMBL37537

cid_72

CP0105

SCHEMBL39435

36R5QJ8L4B

CTK3I6631

HMDB01856

N2466

ZINC13246

3,4-Dihydroxybenzoic acid, analytical standard

ACT07872

DB03946

NSC16631

Protocatechuic acid (M1)

Protocatechuic acid, United States Pharmacopeia (USP) Reference Standard

RP21802

3, 4-Dihydroxybenzoic acid

3,4-Dihydroxy Benzoic Acid

3,4-dihydroxy-benzoic acid

3,4-Dihydroxybenzoate, VIII

bmse000328

C00230

CCRIS 6291

HMS2270A17

KUC104409N

UNII-36R5QJ8L4B

4-Carboxy-1,2-dihydroxybenzene

AC-9617

BBL012232

BT000176

CS-6092

DTXSID4021212

HY-N0294

LS-7685

OR021858

OR382759

SBB061371

STL163570

CHEBI:36062

D-3487

DSSTox_CID_1212

M-3133

3,4-dihydroxybenzoic acid (protocatechuic acid)

AB0008267

AB1002236

AJ-08357

AK-47644

ANW-41020

BR-47644

DSSTox_GSID_21212

KB-28323

NSC 16631

NSC-16631

SC-46684

ST2417248

TRA0078616

ACN-S002778

BB_NC-2256

BDBM50100861

DSSTox_RID_76012

MFCD00002509

AM20060767

CCG-207950

DB-021903

KB-234038

RTR-032902

ST50824448

TR-032902

AKOS000119632

I01-2896

BRN 1448841

FT-0600028

KSC-10-128

MLS000737807

SMR000528167

99-50-3

Benzoic acid, 3,4-dihydroxy-

Tox21_200167

CAS-99-50-3

MCULE-8964889860

NCGC00246757-01

NCGC00246757-02

NCGC00257721-01

EINECS 202-760-0

MolPort-000-881-444

3,4-Dihydroxybenzoic acid, 97% 25g

AE-562/40524392

Benzoic acid, 3,4-dihydroxy- (9CI)

3,4-Dihydroxybenzoic acid, Vetec(TM) reagent grade, 97%

3,4-Dihydroxybenzoic acid, >=97.0% (T)

976C8CCE-B25D-4E0A-9A6F-3CEEA7A6964F

InChI=1/C7H6O4/c8-5-2-1-4(7(10)11)3-6(5)9/h1-3,8-9H,(H,10,11