Welcome to LookChem.com Sign In|Join Free

CAS

  • or

1338682-63-5

Post Buying Request

1338682-63-5 Suppliers

Recommended suppliersmore

  • Product
  • FOB Price
  • Min.Order
  • Supply Ability
  • Supplier
  • Contact Supplier

1338682-63-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1338682-63-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,3,8,6,8 and 2 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1338682-63:
(9*1)+(8*3)+(7*3)+(6*8)+(5*6)+(4*8)+(3*2)+(2*6)+(1*3)=185
185 % 10 = 5
So 1338682-63-5 is a valid CAS Registry Number.

1338682-63-5Downstream Products

1338682-63-5Relevant articles and documents

Nitrile Sulphides. Part 9. Synthesis of 3-Arylisothiazoles

McKie, Marion C.,Paton, R. Michael

, p. 2051 - 2066 (2007/10/02)

3-Arylisothiazoles, unsubstituted at both 4- and 5-positions, have been prepared by two methods based on nitrile sulphide chemistry.Nitrile sulphides, generated by thermal decarboxylation of 5-aryl-1,3,4-oxathiazol-2-ones, react with norbornadiene to give 3-arylisothiazoles in one step, the best yields (50-80percent) being achieved under conditions of high dilution.The mechanism is believed to involve 1,3-dipolar cycloaddition to give dihydroisothiazole (6) followed by retro-Diels Alder extrusion of cyclopentadiene.With norbornene itself exo-dihydroisothiazole (8) is formed. 3-Arylisothiazoles also result from flash vacuum pyrolysis of 3-arylisothiazole-4- and 5-carboxylates and 4,5-dicarboxylates which are, respectively, the cycloadducts of nitrile sulphides with ethyl propiolate and diethyl acetylenedicarboxylate.

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 1338682-63-5