Welcome to LookChem.com Sign In|Join Free

CAS

  • or

124292-87-1

Post Buying Request

124292-87-1 Suppliers

Recommended suppliersmore

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

124292-87-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 124292-87-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,4,2,9 and 2 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 124292-87:
(8*1)+(7*2)+(6*4)+(5*2)+(4*9)+(3*2)+(2*8)+(1*7)=121
121 % 10 = 1
So 124292-87-1 is a valid CAS Registry Number.

124292-87-1Relevant articles and documents

Preparative route to 2-ethoxycarbonylimidazole-4-phosphonate and diethyl imidazole-2,4-dicarboxylate

Vuilhorgne, Marc,Malpart, Joel,Mutti, Stephane,Mignani, Serge

, p. 159 - 162 (2003)

Practical synthesis of 2-ethoxycarbonylimidazole-4-phosphonate (1a) and diethyl imidazole-2,4-dicarboxylate (1b) are described.

Synthetic method of thiazolecarboxylic chemical intermediate end intermediate

-

Paragraph 0009, (2018/11/22)

The invention relates to a synthetic method of a thiazolecarboxylic chemical intermediate end intermediate, comprising: (a) mixing ethyl cyanoformate, isopropyl ether and isopropyl alcohol, and cooling under the protection of an inert gas to -20 DEG C to -5 DEG C; (b) mixing water, sodium bicarbonate, ice and methyl tertiary butyl ether, adding the intermediate, and keeping the temperature less than 0 DEG C and pH of weak basicity so as to free the intermediate; (c) adding compound 2 into ethyl alcohol, cooling by means of ice bath under the protection of an inert gas, and adding ammonium chloride to carry out reacting; (d) dissolving compound 3 in dichloromethane, and adding perchloromethylmercaptan under -10 DEG C to -5 DEG C; (e) dissolving compound 4 in ethyl alcohol, and dropwise adding sodium ethoxide-ethanol solution under ice-water bath and inert gas protection to carry out reacting. Therefore, chemical synthesis according to a new route can be provided for 5-ethoxy-1,2,4-thiadiazole-3-carboxylic acid end intermediate.

Synthesis of 4-Alkoxy-1,3-oxazol-5(2H)-ones, Precursors of 1-Alkoxy-Substituted Nitrile Ylides

Bozhkova, Nina,Heimgartner, Heinz

, p. 825 - 837 (2007/10/02)

4-Alkoxy-1,3-oxazol-5(2H)-ones of type 4 and 7 were synthesized by two different methods: oxidation of the 4-(phenylthio)-1,3-oxazol-5(2H)-one 2a with m-chloroperbenzoic acid in the presence of an alcohol gave the corresponding 4-alkoxy derivatives 4, presumably via nucleophilic substitution of an intermediate sulfoxide (Scheme 2).The second approach is the BF3-catalyzed condensation of imino-acetates of type 6 and ketones (Scheme 3).The yields of this more straightforward method were modest due to the competitive formation of 1,3,5-triazine tricarboxylate 8.At 155 deg C, 1,3-oxazol-5(2H)-one 7b underwent decarboxylation leading to an alkoxy-substituted nitrile ylide which was trapped in a 1,3-dipolar cycloaddition by trifluoro-acetophenone to give the dihydro-oxazoles cis- and trans-9 (Scheme 4).In the absence of a dipolarophile, 1,5-dipolar cyclization of the intermediate nitrile ylide yielded isoindole derivatives 10 (Schemes 4 and 5).

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 124292-87-1