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137520-84-4

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137520-84-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137520-84-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,5,2 and 0 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 137520-84:
(8*1)+(7*3)+(6*7)+(5*5)+(4*2)+(3*0)+(2*8)+(1*4)=124
124 % 10 = 4
So 137520-84-4 is a valid CAS Registry Number.

137520-84-4Downstream Products

137520-84-4Relevant articles and documents

Diels-Alder reactions of 6-alkyl-3,5-dichloro-2H-1,4-oxazin-2-ones with alkynes: Synthesis of 3,5-disubstituted 2,6-dichloropyridines

Meerpoel,Deroover,Van Aken,Lux,Hoornaert

, p. 765 - 768 (2007/10/02)

The Diels-Alder reactiion of 6-alkyl-3,5-dichloro-2H-1,4-oxazin-2-ones 1 with different types of acetylenic compounds 2 is shown to be a versatile method for the generation of variously substituted 2,6-dichloropyridines. In most cases a high degree of reg

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