Δ23-FK-506

Product Name: Δ23-FK-506
CAS No.: 104987-16-8
Chemical Name: Δ23-FK-506
Synonyms: Tacrolimus EP Impurity I (Tacrolimus Diene);Δ23-FK-506;LOS6YV3B9N;delta23-FK 506;TacroliMus Diene;Δ23-FK-506(>90%);Tacrolimus EP Impurity;23,24-Anhydro tacrolimus;Tacrolimus EP Impurity I;Tacrolimus Diene Impurity
CBNumber: CB22652658
Molecular Formula: C44H67NO11
Formula Weight: 786.02
MOL File: 104987-16-8.mol

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Δ23-FK-506 Property

Boiling point:: 858.2±75.0 °C(Predicted)
Density: 1.17±0.1 g/cm3(Predicted)
storage temp.: -10 to -25°C
solubility: Benzene (Slightly), Chloroform (Slightly), Methanol (Slightly)
pka: 9.97±0.70(Predicted)
form: Solid
color: White to Off-White
Stability:: Hygroscopic
Major Application: pharmaceutical
InChIKey: PLHJNIVKYISEQW-KMTRVLEYNA-N

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Safety

WGK Germany: WGK 3
Storage Class: 6.1D - Non-combustible acute toxic Cat.3
toxic hazardous materials or hazardous materials causing chronic effects
Hazard Classifications: Acute Tox. 3 Oral
Eye Irrit. 2
Repr. 2
STOT RE 2

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H301Toxic if swalloed

H311Toxic in contact with skin

H331Toxic if inhaled

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P310IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P311Call a POISON CENTER or doctor/physician.

P312Call a POISON CENTER or doctor/physician if you feel unwell.

P321Specific treatment (see … on this label).

P322Specific measures (see …on this label).

P330Rinse mouth.

P361Remove/Take off immediately all contaminated clothing.

P363Wash contaminated clothing before reuse.

P403+P233Store in a well-ventilated place. Keep container tightly closed.

P405Store locked up.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: PHR8764
Product name: Tacrolimus Impurity I
Purity: pharmaceutical secondary standard, certified reference material
Packaging: 50 mg
Price: $800
Updated: 2026/03/19

TRC

Product number: F370015
Product name: Δ23-FK-506
Packaging: 25mg
Price: $820
Updated: 2021/12/16

TRC

Product number: F370015
Product name: Δ23-FK-506
Packaging: 5mg
Price: $185
Updated: 2021/12/16

Biosynth Carbosynth

Product number: IA35430
Product name: 23,24-Anhydro tacrolimus
Packaging: 2mg
Price: $200
Updated: 2021/12/16

Biosynth Carbosynth

Product number: IA35430
Product name: 23,24-Anhydro tacrolimus
Packaging: 5mg
Price: $300
Updated: 2021/12/16

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Δ23-FK-506 Chemical Properties,Usage,Production

Uses

Δ23-FK 506 is an impurity of FK-506 (Tacrolimus) (F370000), an immunosuppressant macrolactam.

Δ23-FK-506 Preparation Products And Raw materials

Raw materials

Preparation Products

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Δ23-FK-506 Suppliers

Canada 1 China 64 India 4 United Kingdom 2 United States 6 Global 77

Shanghai Jiapu Biotechnology Co., Ltd

Tel: 18221901645
Email: 18221901645@163.com
Country: China
ProdList: 68
Advantage: 58

Changzhou Xianglong Pharmaceutical Technology Co., Ltd.,

Tel: 18915873328 18915873328
Email: sales@xianglongpharm.com
Country: China
ProdList: 11051
Advantage: 58

SiChuan HHTC Biological Technology Co., LTD

Tel: 15982498737
Email: 85819125@qq.com
Country: China
ProdList: 399
Advantage: 58

Quality Control Solutions Ltd.

Tel: 0755-66853366 13670046396
Fax: 0755-28363542
Email: orders@qcsrm.com
Country: China
ProdList: 18421
Advantage: 56

TLC Pharmaceutical Standards Ltd.

Tel: 18012923235 18012923235
Email: chinasales04@tlcstandards.com.cn
Country: China
ProdList: 9004
Advantage: 58

J & K SCIENTIFIC LTD.

Tel: 18210857532; 18210857532
Fax: 86-10-82849933
Email: jkinfo@jkchemical.com
Country: China
ProdList: 96815
Advantage: 76

Chemsky（shanghai）International Co.,Ltd.

Tel: 021-50135380
Email: shchemsky@sina.com
Country: China
ProdList: 32321
Advantage: 50

S.Z. PhyStandard Bio-Tech. Co., Ltd.

Tel: 0755-4000505016 13380397412
Fax: 0755 28094224
Email: 3001272453@qq.com
Country: China
ProdList: 5157
Advantage: 50

Shanghai TaoSu Biochemical Technology Co., Ltd.

Tel: 021-33632979
Fax: 021-34692979
Email: info@tsbiochem.com
Country: China
ProdList: 8065
Advantage: 58

Nanjing XiZe Biotechnology CO., Ltd.

Tel: 025-66023220 15250997978
Fax: 025-58362220
Email: 1511893459@qq.com
Country: China
ProdList: 4876
Advantage: 55

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View Lastest Price from Δ23-FK-506 manufacturers

ShenZhen H&D Pharmaceutical Technology Co., LTD

Product: Tacrolimus Diene 104987-16-8
Price: US $0.00/mg
Min. Order: 10mg
Purity: 0.98
Supply Ability: 5g
Release date: 2025-03-20

Guangzhou Tosun Pharmaceutical Limited

Product: Tacrolimus Diene Impurity 104987-16-8
Price: US $0.00-0.00/mg
Min. Order: 1mg
Purity: above 96%
Supply Ability: 50mg
Release date: 2023-07-18

104987-16-8, Δ23-FK-506Related Search:

Dihydro-FK506 Tacrolimus Ring-opening Impurity Tacrolimus Open Ring Impurity Iso-FK-506 (iso-TacroliMus) (E/Z)-FK-506 26,28-Allylic Ester RearrangeMent IMpurity Ascomycin Tacrolimus Hydroxy Acid Impurity 19-Epi FK-506 TacroliMus Methyl Acryl Aldehyde 8-EpitacroliMus Tacrolimus Monohydrate

Δ23-FK-506

TacroliMus Diene

(3S,4R,8R,12S,14S,15R,16S,18R,19R,26aS)-8,11,12,13,14,15,16,17,18,19,24,25,26,26a-Tetradecahydro-19-hydroxy-3-[(1E)-2-[(1R,3R,4R)-4-hydroxy-3-methoxycyclohexyl]-1-methylethenyl]-14,16-dimethoxy-4,10,12,18-tetramethyl-8-(2-propen-1-yl)-15,19-epoxy(5E,9E)-3H-pyrido[2,1-c][1,4]oxaazacyclotricosine-1,7,20,21(4H,23H)-tetrone

delta23-FK 506

(3S,4R,8R,12S,14S,15R,16S,18R,19R,26aS)-8,11,12,13,14,15,16,17,18,19,24,25,26,26a-tetradecahydro-19-hydroxy-3-[(1E)-2-[(1R,3R,4R)-4-hydroxy-3-methoxycyclohexyl]-1-methylethenyl]-14,16-dimethoxy-4,10,12,18-tetramethyl-8-(2-propen-1-yl)-15,19-epoxy(5E,9E)-

Tacrolimus Diene Impurity (USP)

Tacrolimus Diene Impurity

Tacrolimus Impurity 4（Tacrolimus EP Impurity I ）（Tacrolimus Diene）

23,24-Anhydro tacrolimus

Tacrolimus EP Impurity I (Tacrolimus Diene)

Tacrolimus 5,6-Anhydro Impurity

15,19-Epoxy(5E,9E)-3H-pyrido[2,1-c][1,4]oxaazacyclotricosine-1,7,20,21(4H,23H)-tetrone, 8,11,12,13,14,15,16,17,18,19,24,25,26,26a-tetradecahydro-19-hydroxy-3-[(1E)-2-[(1R,3R,4R)-4-hydroxy-3-methoxycyclohexyl]-1-methylethenyl]-14,16-dimethoxy-4,10,12,18-tetramethyl-8-(2-propen-1-yl)-, (3S,4R,8R,12S,1...

Tacrolimus EP Impurity I

LOS6YV3B9N

15,19-Epoxy(5E,9E)-3H-pyrido[2,1-c][1,4]oxaazacyclotricosine-1,7,20,21(4H,23H)-tetrone, 8,11,12,13,14,15,16,17,18,19,24,25,26,26a-tetradecahydro-19-hydroxy-3-[(1E)-2-[(1R,3R,4R)-4-hydroxy-3-methoxycyclohexyl]-1-methylethenyl]-14,16-dimethoxy-4,10,12,18-tetramethyl-8-(2-propen-1-yl)-, (3S,4R,8R,12S,14S,15R,16S,18R,19R,26aS)- (Tacrolimus Impurity)

Tacrolimus EP Impurity

(3S,4R,5E,8R,9E,12S,14S,15R,16S,18R,19R,26aS)-19-hydroxy-3-[(1E)-1-[(1R,3R,4R)-4-hydroxy-3-methoxycyclohexyl]prop-1-en-2-yl]-14,16-dimethoxy-4,10,12,18-tetramethyl-8-(prop-2-en-1-yl)-3,4,8,11,12,13,14,15,16,17,18,19,24,25,26,26a-hexadecahydro-7H-15,19-epoxypyrido[2,1-c][1,4]oxaazacyclotricosine-1,7,20,21(23H)-tetrone

(3S,4R,5E,8R,9E,12S,14S,15R,16S,18R,19R,26aS)-19-hydroxy-3-[(1E)-1-[(1R,3R,4R)-4-hydroxy-3-methoxycyclohexyl]prop-1-en-2-yl]-14,16-dimethoxy-4,10,12,18-tetramethyl-8-(prop-2-en-1-yl)-3,4,8,11,12,13,14

δ23-FK-506, CAS 104987-16-8

Δ23-FK-506(>90%)

Tacrolimus Monohydrate Imp.I(EP): (3S,4R,5E,8R,9E,12S,14S,15R,16S,18R,19R,26aS)-19-hydroxy-3-[(1E)-1-[(1R,3R,4R)-4-hydroxy-3-methoxycyclohexyl]prop-1-en-2-yl]-14,16-dimethoxy-4,10,12,18-tetramethyl-8-(prop-2-en-1-yl)-3,4,8,11,12,13,14,15,16,17,18,19,24,25,26,26a-hexadecahydro-7H-15,19-epoxypyrido[2,1-c][1,4]oxaazacyclotricosine-1,7,20,21(23H)-tetrone

104987-16-8

C44H67NO11

Chiral Reagents

Impurities

Intermediates & Fine Chemicals

Pharmaceuticals

Chiral Reagents, Impurities, Pharmaceuticals, Intermediates & Fine Chemicals