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19545-65-4

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19545-65-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19545-65-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,5,4 and 5 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 19545-65:
(7*1)+(6*9)+(5*5)+(4*4)+(3*5)+(2*6)+(1*5)=134
134 % 10 = 4
So 19545-65-4 is a valid CAS Registry Number.

19545-65-4Downstream Products

19545-65-4Relevant articles and documents

FORMATION OF PYRYLIUM SALTS IN THE ACYLATION OF STERICALLY HINDERED QUINONES

Ukhin, L. Yu.,Dolgopolova, N. A.,Morkovnik, Z. S.,Kuz'mina, L. G.,Struchkov, Yu. T.

, p. 364 - 368 (1983)

The reaction of 3,5-di-tert-butyl-o-benzoquinone and 2,6-di-tert-butyl-p-benzoquinone with solutions of 70percent HClO4 in acetic and propionic anhydrides and with boron trifluoride etherate in acetic anhydride leads to the formation of pyrylium salts in high yields.

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