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67213-08-5

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67213-08-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 67213-08-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,2,1 and 3 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 67213-08:
(7*6)+(6*7)+(5*2)+(4*1)+(3*3)+(2*0)+(1*8)=115
115 % 10 = 5
So 67213-08-5 is a valid CAS Registry Number.

67213-08-5Downstream Products

67213-08-5Relevant articles and documents

Expeditious synthesis of helicenes using an improved protocol of photocyclodehydrogenation of stilbenes

Talele, Harish R.,Chaudhary, Anju R.,Patel, Parthiv R.,Bedekar, Ashutosh V.

, p. 15 - 37 (2011/06/19)

An improved procedure has been developed for photodehydrocyclization of stilbenes for the synthesis of phenanthrenes and helicenes. This procedure involves the use of THF as a scavenger of hydriodic acid produced during iodine mediated photodehydrocyclization. The use of THF is advantageous due to its higher boiling point, lower cost and easy availability as compared to propylene oxide. The method is applied to synthesize a number of phenanthrenes and helicenes. ARKAT-USA, Inc.

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