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87512-65-0

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87512-65-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87512-65-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,5,1 and 2 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 87512-65:
(7*8)+(6*7)+(5*5)+(4*1)+(3*2)+(2*6)+(1*5)=150
150 % 10 = 0
So 87512-65-0 is a valid CAS Registry Number.

87512-65-0Downstream Products

87512-65-0Relevant articles and documents

The Behaviour of 2H-1-Benzopyrans Toward Trialkylaluminium Reagents

Alberola, Angel,Ortega, Alfonso Gonzalez,Pedrosa, Rafael,Bragado, Jose L. Perez,Amo, Justo F. Rodriguez

, p. 1209 - 1212 (2007/10/02)

2H-1-Benzopyrans react with trialkylaluminium compounds by alkyl- and hydrogen-transfer to C-2 and C-4 to give the o-allylphenols (2), (3), and the (E)-o-propenylphenols (4) and (5).The site of attack and the ratio of alkyl- to hydrogen-transfer depend on the alkylaluminium used and on the size of the substituent at C-2 of the pyran.A mechanism involving reaction of the alkylaluminium with the quinone methanide (6), which is in equilibrium with the pyran (1), is in accord with all experimental results.

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