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CAS 137-45-1 1,2-Dihydro-3H-pyrazol-3-one molecular structure lightbox
CAS RN: 137-45-1

1,2-Dihydro-3H-pyrazol-3-one

Product Availability

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7 package records7 with current stock2 grade groups
Batch No.PackageAvailabilityWarehouseInquiry
Batchno.20260531 100g In stock Inquiry
Batchno.20250809 10g In stock Inquiry
Batchno.20250903 1g In stock Inquiry
Batchno.20250320 250mg In stock Inquiry
Batchno.20250521 25g In stock Inquiry
Batchno.20260124 5g In stock Inquiry
Batch No.PackageAvailabilityWarehouseInquiry
Batchno.20250711 250mg / 5g / 25g / 100g / 500g Confirm by inquiry Shanghai, Shandong, Chongqing, Hebei Inquiry
  • Product code: SSC-046498
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Verified Factory Data

Supply Overview & Packaging Options

Packaging options, recorded purity, stock quantity and ship-from location below are generated from the current factory data table for this CAS.

  • Pack sizes on record: 1g, 5g, 10g, 25g, 100g, 500g, 1000g
  • Available purity: ≥95%
  • Inventory rows with stock: 3
  • Bulk packaging: confirmed by inquiry
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Available Pack Sizes & Stock

Specific stock quantities are shown below. Price is not displayed online and is confirmed by inquiry.

Recorded sizes, purity and stock details for CAS 137-45-1
Pack Size Recorded Purity Available Qty Ship From Inquiry
1g ≥95% 5 In Stock Shenzhen Inquiry
5g ≥95% 5 In Stock Hong Kong Inquiry
10g ≥95% 4 In Stock Beijing Inquiry
25g ≥95% 0 Out of Stock Beijing Inquiry
100g ≥95% 0 Out of Stock Hong Kong Inquiry
500g ≥95% 0 Out of Stock Beijing Inquiry
1000g ≥95% 0 Out of Stock Hong Kong Inquiry

137-45-1 / 1,2-dihydropyrazol-3-one

Standard CAS: 137-45-1 Multi CAS: No
Basic Information Computed Properties Safety & Transport

Basic Information

CAS
137-45-1
Multi CAS
No
Molecular Formula
C3H4N2O
Molecular Weight
84.080000
Exact Mass
84.032363
SMILES
C1=CNNC1=O
InChI
InChI=1S/C3H4N2O/c6-3-1-2-4-5-3/h1-2H,(H2,4,5,6)
InChIKey
XBYRMPXUBGMOJC-UHFFFAOYSA-N

Computed Properties

Structural Parameters

Heavy atom count
6
Aromatic heavy atom count
5
H-bond acceptors
1
H-bond donors
2
Molar refractivity
21.41
TPSA
48.65

LogP / Solubility

WLOGP
-0.3
MLOGP
-0.28
XLogP3
-0.3
Consensus LogP
-0.29
Log S (ESOL)
-0.79
Class (ESOL)
Very soluble
Log S (Ali)
-0.04
Class (Ali)
Very soluble
Log S (SILICOS-IT)
0.04
Class (SILICOS-IT)
Highly soluble

ADME

GI absorption
High
BBB permeant
Yes
P-gp substrate
No
CYP1A2 inhibitor
No
CYP2C19 inhibitor
No
CYP2C9 inhibitor
No
CYP2D6 inhibitor
No
CYP3A4 inhibitor
No
Log Kp (skin permeation)
-3.44

Drug-likeness / Medicinal Chemistry

Lipinski
Yes
Ghose
No
Veber
Yes
Egan
Yes
Muegge
No
Bioavailability score
0.55
Leadlikeness
No
Synthetic Accessibility
1.5

Safety & Transport

Pictogram(s)
Irritant
Signal
Warning
GHS Hazard Statements
H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation] H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation] H335 (100%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
Precautionary Statement Codes
P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 P264, P264+P265, P280, P302+P352, P305+P351+P338, P321, P332+P317, P337+P317, and P362+P364

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