Welcome to LookChem.com Sign In|Join Free
  • or
Home > Pharmaceutical > 5873 > 

5873-93-8

Basic Information
CAS No.: 5873-93-8
Name: Diphenyldithioperoxyanhydride
Article Data: 37
Molecular Structure:
Molecular Structure of 5873-93-8 (Diphenyldithioperoxyanhydride)
Formula: C14H10S4
Molecular Weight: 306.497
Synonyms: Disulfide,bis(thiobenzoyl) (6CI,7CI,8CI);Bis(thiobenzoyl) disulfide;Di(thiobenzoyl)disulfide;
Density: 1.367 g/cm3
Melting Point: 94-96°C
Boiling Point: 446.8 °C at 760 mmHg
Flash Point: 224 °C
Hazard Symbols: N
Risk Codes: 50/53
Safety: 60-61
PSA: 114.78000
LogP: 5.11920
Synthetic route
75-15-0

carbon disulfide

108-86-1

bromobenzene

5873-93-8

bis(thiobenzoyl) disulfide

Conditions
ConditionsYield
Stage #1: bromobenzene With iodine; magnesium In tetrahydrofuran at 30 - 75℃; for 3h; Inert atmosphere;
Stage #2: carbon disulfide In tetrahydrofuran at 0 - 20℃; for 3h; Inert atmosphere;
90%
Stage #1: bromobenzene With magnesium; iodine In tetrahydrofuran
Stage #2: carbon disulfide In tetrahydrofuran Grignard reaction;
Stage #3: With dimethyl sulfoxide; iodine In ethanol at 20℃; for 1h; Further stages.;
82%
Stage #1: bromobenzene With iodine; magnesium In tetrahydrofuran
Stage #2: carbon disulfide In tetrahydrofuran at 20℃; for 1h;
Stage #3: With p-toluenesulfonyl chloride In tetrahydrofuran at 0 - 20℃; for 1.5h;
55%
Stage #1: bromobenzene With iodine; magnesium In tetrahydrofuran for 3h;
Stage #2: carbon disulfide In tetrahydrofuran for 3h;
Stage #3: With iodine In water
Stage #1: carbon disulfide; bromobenzene With magnesium In tetrahydrofuran at 0℃; Inert atmosphere;
Stage #2: With water; potassium hexacyanoferrate(III) for 1.5h;
4.88 g
1114-31-4

diethyl meso-2,3-dibromosuccinate

42967-74-8

dithiobenzoic acid triethylammonium salt

A

5873-93-8

bis(thiobenzoyl) disulfide

B

623-91-6

diethyl Fumarate

Conditions
ConditionsYield
In ethanolA 54%
B 50%
3682-36-8

dithiobenzoic acid sodium salt

5873-93-8

bis(thiobenzoyl) disulfide

Conditions
ConditionsYield
With iodine In water at 20℃; for 0.25h;50%
With potassium hexacyanoferrate(III) In water at 20℃; for 1h;
With potassium hexacyanoferrate(III)
75-15-0

carbon disulfide

100-58-3

phenylmagnesium bromide

5873-93-8

bis(thiobenzoyl) disulfide

Conditions
ConditionsYield
at 0 - 20℃; for 0.5h;35%
In tetrahydrofuran; 2-methyltetrahydrofuran at 0℃; for 0.75h; Inert atmosphere;31%
Stage #1: carbon disulfide; phenylmagnesium bromide In tetrahydrofuran
Stage #2: With iodine; potassium carbonate In water
128-09-6

N-chloro-succinimide

97270-46-7

thiobenzoyl diphenylphosphino sulfide

A

5873-93-8

bis(thiobenzoyl) disulfide

B

80031-12-5

N-(thiobenzoylthio)succinimide

C

1101-41-3

Tetraphenyldiphosphin

Conditions
ConditionsYield
In tetrahydrofuranA n/a
B 16%
C n/a
7631-95-0

sodium molybdate dihydrate

50929-87-8

diethylammonium dithiobenzoate

A

Mo(4+)*O(2-)*2S2CC6H5(1-)=MoO(S2CC6H5)2

B

81844-27-1, 71900-01-1

(η3-dithiobenzoato-SCS')oxo(trithioperoxybenzoato-S,S'S'')molybdenum(IV)

C

(C6H5CS2)4Mo

D

5873-93-8

bis(thiobenzoyl) disulfide

Conditions
ConditionsYield
With NaCH3COO; hydrochloric acid In water to aq. soln. of Na2MoO4*2H2O, (NEt2H2)(S2CPh), and MeCO2Na added HCl (1.0 M) dropwise with stirring at room temp.; ppt. filtered off, washed with water and methanol, dried in vac., chromd. (SiO2, CS2), orange fraction evapd. in vac., recrystd. from CH2Cl2-light petroleum; elem. anal.;A n/a
B 6%
C n/a
D n/a
19911-87-6

tetraethylammonium dithiobenzoate

A

5873-86-9

methyl thiobenzoate

B

1125-88-8

benzaldehyde dimethyl acetal

C

5873-93-8

bis(thiobenzoyl) disulfide

D

Bis(thiobenzoylthio-benzyl)disulfid

Conditions
ConditionsYield
With tetraethylammonium perchlorate In methanol at 80℃; for 3h; electrochemical reaction, 14 mA*cm-2, 2.5 F; Further byproducts given;A n/a
B n/a
C n/a
D 5%
60-29-7

diethyl ether

936-63-0

S-ethyl dithiobenzoate

phenylmagnesium bromide

A

5873-93-8

bis(thiobenzoyl) disulfide

B

1727-16-8

S-trityl benzothioate

Conditions
ConditionsYield
nachf. Behandeln mit Benzoylchlorid;
936-63-0

S-ethyl dithiobenzoate

phenylmagnesium bromide

5873-93-8

bis(thiobenzoyl) disulfide

50929-87-8

diethylammonium dithiobenzoate

5873-93-8

bis(thiobenzoyl) disulfide

Conditions
ConditionsYield
With iodine In ethanol at -5℃; for 0.166667h;
  • Display:default sort

    New supplier

  • Disulfide,bis(phenylthioxomethyl) Manufacturer/High quality/Best price/In stock

  • Casno:

    5873-93-8

    Disulfide,bis(phenylthioxomethyl) Manufacturer/High quality/Best price/In stock

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 3.0-3.0

    Dayangchem's R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. DayangChem can provide different quantities

    Dayang Chem (Hangzhou) Co.,Ltd. dedicated to the development, production and marketing of chemicals which is specialized in Organic compounds; Active Pharmaceutical Ingredi

  •  Dayang Chem (Hangzhou) Co.,Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-571-88938639

    Address:9/F, Unit 2 Changdi Torch Building, 259# WenSan Road, Xihu District, Hangzhou City 310012, P.R.China

       Inquiry Now

  • Manufacturer supply CAS 5873-93-8 with best quality

  • Casno:

    5873-93-8

    Manufacturer supply CAS 5873-93-8 with best quality

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 139.0-210.0

    WITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et

    Zhuo Zhou Wen Xi Import and Export Co., Ltd. is a company mainly engaged in the export of pharmaceutical raw materials. Its parent company is (Wen Xi Pharma), including three subs

  •  Zhuozhou Wenxi import and Export Co., Ltd

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86-13111626072

    Address:Room 1710, Baoxin International Phase I, 19 Guanyun East Road, Zhuozhou, Hebei

       Inquiry Now

  • Diphenyldithioperoxyanhydride CAS5873-93-8

  • Casno:

    5873-93-8

    Diphenyldithioperoxyanhydride CAS5873-93-8

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 289.0-499.0

    1. Product advantages ♦ High purity, all above 98.5%, no impurities after dissolution ♦ We will test each batch to ensure quality ♦ OEM and private brand services designed for free ♦ Various cap colors available ♦ W

    Hebei Sankai Chemical Technology Co., Ltd. is a new chemical enterprise integrating the research, manufacturing and supply of chemicals. Located in the beautiful "cattle city" Xing

  •  Hebei Sankai Chemical Technology Co., Ltd

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86 15932099601

    Address:hebei

       Inquiry Now

  • Disulfide,bis(phenylthioxomethyl)

  • Casno:

    5873-93-8

    Disulfide,bis(phenylthioxomethyl)

    Min.Order: 1 Gram

    FOB Price:  USD $ 0.0-0.0

    1.In No Less 10 years exporting experience. you can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specializ

    Shanghai Upbio Tech Co.,Ltd (Former Onchem (China)Co.,Ltd) is a comprehensive manufacturer and an international distribution of chemicals throughout the world, The predecessor of

  •  Shanghai Upbio Tech Co.,Ltd

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-21-52196435

    Address:No.2 Floor,No.979 Yunhan Rd,Nicheng,Pudong New Area,Shanghai,China

       Inquiry Now

  • Disulfide,bis(phenylthioxomethyl)

  • Casno:

    5873-93-8

    Disulfide,bis(phenylthioxomethyl)

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 0.0-0.0

    Hello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai

    Shandong Hanjiang Chemical Co., Ltd. is located in Zibo City, Shandong Province, China. It is a biotechnology enterprise engaged in the R&D, production and sales of drugs, steroids

  •  Shandong Hanjiang Chemical Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86 18369939125

    Address:No.25A Qilu Industrial Park

       Inquiry Now

  • Disulfide,bis(phenylthioxomethyl)

  • Casno:

    5873-93-8

    Disulfide,bis(phenylthioxomethyl)

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    Henan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod

    The company is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds,

  •  Henan Wentao Chemical Product Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-370-2722992

    Address:32 Room, 5th Floor, Building 11, No. 6 Yinxing Road, High-tech Industrial Development Zone, Zhengzhou City, Henan Province

       Inquiry Now

  • Disulfide,bis(phenylthioxomethyl)

  • Casno:

    5873-93-8

    Disulfide,bis(phenylthioxomethyl)

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    J&H CHEM R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. J&H CHEM has some Manufacturing base in Jia

    J&H Chemical is one of China's leading providers of integrated fine chemical services including offering, research and development, Custom manufacturing business, as well as other

  •  Hangzhou J&H Chemical Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-571-87396432

    Address:No.200 Zhenhua Rd.Xihu Industrial Park, Hangzhou 310030, China

       Inquiry Now

  • 5873-93-8 	Diphenyldithioperoxyanhydride

  • Casno:

    5873-93-8

    5873-93-8  Diphenyldithioperoxyanhydride

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 1000.0-1000.0

    Our company was built in 2009 with an ISO certificate.In the past 6 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scientific and so on.O

    Our company engages in Electronic chemicals such as OLED,Photoresist chemical,Electrolyte additive and Intermediate Pharmaceutical production; development of noble metal catalysts,

  •  Henan Tianfu Chemical Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:86-371-55170693/55170694

    Address:Zhengzhou International Trade New Territory,Jinshui District,Zhengzhou ,China

       Inquiry Now

  • 5873-93-8  CAS NO.5873-93-8

  • Casno:

    5873-93-8

    5873-93-8 CAS NO.5873-93-8

    Min.Order: 1 Metric Ton

    FOB Price:  USD $ 7.0-8.0

    1.Applied in food field.it can improve the immune system and prolong life. 2.Appliedin cosmetic field.it can improve the skin care. 3.Applied in pharmaceutical field.it can treat various dieases. 4.Our product quality assurance will make our customer

    KAISA GROUP INC.is the enterprise which is specialize in manfacturing and exporting avariety of Chemical in China. We have the strong economic base and comprehensive technology.We

  •  KAISA GROUP INC

    United States  |  Contact Details

    Business Type:Trading Company

    Tel:15131197030

    Address:1312 17th Street Suite 1402 Denver CO 80202

       Inquiry Now

  • di-(Thiobenzoyl) disulfide

  • Casno:

    5873-93-8

    di-(Thiobenzoyl) disulfide

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    high purity,in stock Package:25kg/drum,or as per customers'demand Application:API,or Intermediates,fine chemicals Transportation:air,sea,courier

    GIHI CHEMICALS CO.,LIMITED, its former company is a small manufacturer who is specialized in the production of ester products which are used in the daily chemicals ,cosmetic produc

  •  GIHI CHEMICALS CO.,LIMITED

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:571-86217390

    Address:Huacai International Building,Sandun,Westlake District,Hangzhou 310030,Zhejiang,China

       Inquiry Now

  • Disulfide,bis(phenylthioxomethyl)

  • Casno:

    5873-93-8

    Disulfide,bis(phenylthioxomethyl)

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    Ansciep Chemical is a professional enterprise manufacturing and distributing fine chemicals and speciality chemicals. We have been dedicated to heterocycle compounds and phenyl rings for tens of years. This is our mature product for export. Our quali

    Antimex Chemical Limied, was founded in 2001, we are specializing in manufacturing & researching of Active pharmaceutical Ingredients,Veterinary pharm APIs,cosmetic ingredients,and

  •  Antimex Chemical Limied

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:0086-21-50563169

    Address:Room1027,No.Jinyu Road,Pudong

       Inquiry Now

  • 5873-93-8

  • Casno:

    5873-93-8

    5873-93-8

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    Supply top quality products with a reasonable price Application:api

    Changchun Artel Import and Export Trade Co., Ltd. is located in Changchun City, Jilin Province. It is a high-tech modern private enterprise specializing in the research, developme

  •  Changchun Artel lmport and Export trade company

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86-0431-80543058

    Address:Dianshi Plazza,Chaoyang District

       Inquiry Now

  • Disulfide,bis(phenylthioxomethyl) cas  5873-93-8

  • Casno:

    5873-93-8

    Disulfide,bis(phenylthioxomethyl) cas 5873-93-8

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    Disulfide,bis(phenylthioxomethyl) cas 5873-93-8Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express

    Welcome to Hangzhou Fandachem Co.,Ltd (www.FandaChem.com) Hangzhou Fandachem Co.,Ltd (Fandachem),an experienced and professional China-based Fine Chemical supplier. We supply the

  •  Hangzhou Fandachem Co.,Ltd

    China (Mainland)  |  Contact Details

    Business Type:Other

    Tel:+86-571-28800458

    Address:Room 5010, No.9 YanAn Road,Hangzhou,Zhejiang,China

       Inquiry Now

  • 5873-93-8

  • Casno:

    5873-93-8

    5873-93-8

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    Good Quality Package:1kg/bag Application:Medical or chemical Transportation:Air/Train/Sea Port:Shenzhen

    Shanghai Chinqesen Biotechnology Co., Ltd. Company slogan:?Innovation, cooperation and win-win Company introduction:?Shanghai Chinqesen Biotechnology Co., Ltd. is a professional ph

  •  Shanghai Chinqesen Biotechnology Co., Ltd.

    China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+8617316470195

    Address:333 Songze Avenue, Qingpu District, Shanghai

       Inquiry Now

  • Diphenyldithioperoxyanhydride

  • Casno:

    5873-93-8

    Diphenyldithioperoxyanhydride

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin

    Zhejiang Jiuzhou Chemical Co.,Ltd is a market-oriented and innovation-driven biopharmaceutical company. The company is focusing on the R&D, manufacturing and sales of pharmaceutica

  •  ZHEJIANG JIUZHOU CHEM CO.,LTD

    China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86 19334956669

    Address:Waisha Road,Jiaojiang

       Inquiry Now

  • 5873-93-8  CAS NO.5873-93-8

  • Casno:

    5873-93-8

    5873-93-8 CAS NO.5873-93-8

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    Price, service, company and transport advantage: 1. Best service, place of origin China, high quality, and reasonable price. 2. It's customers' right to choose the package (EMS, DHL, FEDEX, UPS). 3. It's customers' right

    Changchun Haofei Import and Export Trade Co. , Ltd is located in Changchun, Changchun, Jilin Province. We are a modern high-tech private enterprise specializing in the R & D, Produ

  • Jilin haofei import and export trade Co.,Ltd

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+8615643102578

    Address:303 Room, Guanghui Park, Huanghe Road, Kuancheng District

       Inquiry Now

  • Disulfide,bis(phenylthioxomethyl)

  • Casno:

    5873-93-8

    Disulfide,bis(phenylthioxomethyl)

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    United Scientific Company Located in Shanghai of China , is a competitive player in the global specialty and fine chemical market. Fenghua has both the expertise and flexibility to produce a wide range of chemicals. Focusing on developing the innovat

    United Scientific Company (USC) Located in Shanghai of China , is a competitive player in the global specialty and fine chemical market. USC has both the expertise and flexibility

  • Shanghai united Scientific Co.,Ltd.

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-21-53535353

    Address:28F No.900 huaihai Road Shanghai China

       Inquiry Now

  • Diphenyldithioperoxyanhydride

  • Casno:

    5873-93-8

    Diphenyldithioperoxyanhydride

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    FINETECH INDUSTRY LIMITED is a LONDON based CRO company providing drug discovery & development services to worldwide clients. FINETECH INDUSTRY LIMITED supplies the Diphenyldithioperoxyanhydride, CAS:5873-93-8 with the most competitive price and the

    Finetech Industry Limited is a company in England,which specializing in developing, manufacturing and marketing fine organic compounds and intermediates for the fine chemical and p

  • Finetech Industry Limited

    China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:86-27-87465837

    Address:wuhan

       Inquiry Now

  • Disulfide,bis(phenylthioxomethyl)

  • Casno:

    5873-93-8

    Disulfide,bis(phenylthioxomethyl)

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    Disulfide,bis(phenylthioxomethyl) Storage:keep in dry and cool condition Package:25kg or according to cutomer's demand Application:Chemical research/pharma intermediate Transportation:By Sea,by Air,By courier like DHL or Fedx. Port:Shanghai/Shenzhen

    Nanjing Raymon Biotech Co., Ltd. is specialized in developing and marketing middle & high level pharmaceutical intermediates. We are supplying different categories of high-quality

  • Nanjing Raymon Biotech Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:86-025-52181296

    Address:Block B, No. 918, Shuanglong Avenue

       Inquiry Now

  • Disulfide,bis(phenylthioxomethyl)

  • Casno:

    5873-93-8

    Disulfide,bis(phenylthioxomethyl)

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0

    Disulfide,bis(phenylthioxomethyl)Appearance:Off white to slight yellow solid Storage:Stored in shaded, cool and dry places Package:1L 5L 10L 25L bottle Application:pharma intermediate Transportation:Handle with cares to avoid damaging the packages. P

  • Chemical Co.Ltd

    China (Mainland)  |  Contact Details

    Business Type:Trading Company

       Inquiry Now

  • Total:20 Page 1 of 1 1
Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1

What can I do for you?
Get Best Price

Get Best Price for 5873-93-8

Specification

The Disulfide,bis(phenylthioxomethyl), with the CAS registry number 5873-93-8, is also known as Bis(thiobenzoyl) disulfide. This chemical's molecular formula is C14H10S4 and molecular weight is 306.497. What's more, its systematic name is called Diphenyldithioperoxyanhydride.

Physical properties about Disulfide,bis(phenylthioxomethyl) are: (1)ACD/LogP: 5.84; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 5.84; (4)ACD/LogD (pH 7.4): 5.84; (5)ACD/BCF (pH 5.5): 16156.2; (6)ACD/BCF (pH 7.4): 16156.2; (7)ACD/KOC (pH 5.5): 35802.75; (8)ACD/KOC (pH 7.4): 35802.75; (9)#H bond acceptors: 0; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 5; (12)Polar Surface Area: 114.78 Å2; (13)Index of Refraction: 1.755; (14)Molar Refractivity: 91.76 cm3; (15)Molar Volume: 224 cm3; (16)Surface Tension: 74.1 dyne/cm; (17)Density: 1.367 g/cm3; (18)Flash Point: 224 °C; (19)Enthalpy of Vaporization: 67.79 kJ/mol; (20)Boiling Point: 446.8 °C at 760 mmHg; (21)Vapour Pressure: 9.34E-08 mmHg at 25 °C.

You can still convert the following datas into molecular structure:
(1) SMILES: S=C(SSC(=S)c1ccccc1)c2ccccc2
(2) InChI: InChI=1/C14H10S4/c15-13(11-7-3-1-4-8-11)17-18-14(16)12-9-5-2-6-10-12/h1-10H
(3) InChIKey: LWGLGSPYKZTZBM-UHFFFAOYAM