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38751-08-5

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38751-08-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 38751-08-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,8,7,5 and 1 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 38751-08:
(7*3)+(6*8)+(5*7)+(4*5)+(3*1)+(2*0)+(1*8)=135
135 % 10 = 5
So 38751-08-5 is a valid CAS Registry Number.

38751-08-5Upstream product

38751-08-5Downstream Products

38751-08-5Relevant articles and documents

Electrophilic Reactions of Activated Alkenes and Alkynes with Element Halides. III. Reaction of Activated Alkenes with Phosphorus Trihalides

Kazankova,Trostyanskaya,Efimova,Beletskaya

, p. 1606 - 1619 (2007/10/03)

Electrophilic substitution of the vinyl hydrogen atom in alkenyl alkyl ethers, 2-bromoethenyl alkyl ethers, and ketene acetals readily occurs under the action of phosphorus trihalides in the presence of an organic base to yield 70-98% of 2-alkoxy-, 2-alkoxy-1-bromo-, and 2,2-dialkoxyalkenylphosphonous dichlorides and dibromides. The reaction is regio- and stereospecific. A mechanism involving intermediate formation of a cyclic phosphiranium ion is proposed.

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