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CAS 203866-21-1 (2S)-Fmoc-4,4-difluoro-pyrrolidine-2-carboxylic acid molecular structure lightbox
CAS RN: 203866-21-1

(2S)-Fmoc-4,4-difluoro-pyrrolidine-2-carboxylic acid

Product Availability

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5 package records5 with current stock1 grade group
Batch No.PackageAvailabilityWarehouseInquiry
Batchno.20250107 1g In stock Shanghai, Shenzhen Inquiry
Batchno.20260409 1g / 5g / 25g Confirm by inquiry Shanghai Inquiry
Batchno.20260410 250mg In stock Shanghai, Chengdu Inquiry
Batchno.20250325 25g In stock Shanghai Inquiry
Batchno.20250416 5g In stock Shanghai, Tianjin Inquiry
  • Product code: SSC-095955
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Historical Factory Record

Historical Supply Reference

This product has historical factory records. Recorded pack sizes and purity can be used as a supply reference, while project-specific availability is confirmed by inquiry.

  • Pack sizes on record: 1g
  • Available purity: ≥95%
  • Inventory rows with stock: 0
  • Bulk packaging: confirmed by inquiry
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Reference Pack Sizes

Reference pack sizes are shown below. Final availability, packaging and delivery schedule are confirmed by inquiry.

Recorded sizes, purity and stock details for CAS 203866-21-1
Pack Size Recorded Purity Available Qty Ship From Inquiry
1g ≥95% 0 Out of Stock Shenzhen Inquiry

203866-21-1 / (2S)-1-(9H-fluoren-9-ylmethoxycarbonyl)-4,4-difluoropyrrolidine-2-carboxylic acid

Standard CAS: 203866-21-1 Multi CAS: No
Basic Information Computed Properties

Basic Information

CAS
203866-21-1
Multi CAS
No
Molecular Formula
C20H17F2NO4
Molecular Weight
373.300000
Exact Mass
373.112564
SMILES
C1[C@H](N(CC1(F)F)C(=O)OCC2C3=CC=CC=C3C4=CC=CC=C24)C(=O)O
InChI
InChI=1S/C20H17F2NO4/c21-20(22)9-17(18(24)25)23(11-20)19(26)27-10-16-14-7-3-1-5-12(14)13-6-2-4-8-15(13)16/h1-8,16-17H,9-11H2,(H,24,25)/t17-/m0/s1
InChIKey
QLKUZDLPWHCYAO-KRWDZBQOSA-N

Computed Properties

Structural Parameters

Heavy atom count
27
Aromatic heavy atom count
12
Fraction Csp3
0.3
Rotatable bonds
3
H-bond acceptors
3
H-bond donors
1
Molar refractivity
92.76
TPSA
66.84

LogP / Solubility

WLOGP
3.73
MLOGP
3.3
XLogP3
3.7
Consensus LogP
3.58
Log S (ESOL)
-4.64
Class (ESOL)
Slightly soluble
Log S (Ali)
-5.31
Class (Ali)
Slightly soluble
Log S (SILICOS-IT)
-5.54
Class (SILICOS-IT)
Slightly soluble

ADME

GI absorption
High
BBB permeant
No
P-gp substrate
No
CYP1A2 inhibitor
Yes
CYP2C19 inhibitor
Yes
CYP2C9 inhibitor
Yes
CYP2D6 inhibitor
Yes
CYP3A4 inhibitor
Yes
Log Kp (skin permeation)
-2.35

Drug-likeness / Medicinal Chemistry

Lipinski
Yes
Ghose
Yes
Veber
Yes
Egan
Yes
Muegge
Yes
Bioavailability score
0.55
Leadlikeness
No
Synthetic Accessibility
3.5

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