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18648-21-0

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18648-21-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18648-21-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,6,4 and 8 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 18648-21:
(7*1)+(6*8)+(5*6)+(4*4)+(3*8)+(2*2)+(1*1)=130
130 % 10 = 0
So 18648-21-0 is a valid CAS Registry Number.

18648-21-0Upstream product

18648-21-0Downstream Products

18648-21-0Relevant articles and documents

CYCLIZATION AND REARRANGEMENT OF DITERPENOIDS. VII. COMPOSITION OF THE HYDROCARBON FRACTION OF A MIXTURE OF THE PRODUCTS OF CYCLIZATION OF MANOOL AND SCLAREOL BY ORDINARY ACIDS

Ungur, N. D.,Barba, A. N.,Vlad, P. F.

, p. 612 - 614 (1988)

The hydrocarbon fractions of the products of the cyclization of manool and sclareol by a mixture of conc. sulfuric and formic or acetic acids have been investigated.It has been established that they contain, in addition to the Δ8/9-pimaradiene, Δ8(9)-isopimaradiene, roasadiene, and 13-epirosadiene identified previously, the tetracyclic hydrocarbons (1R, 2S, 7S, 11S, 12R, 13R)-2, 6, 6, 11, 13-pentamethyltetracyclo1.10.02.7>pentadeca-9-ene and (1S, 2R, 11S, 12R, 1R)-2, 7, 7, 11, 15-pentamethyltetracyclo2.11.03.8>pentadeca(8)-ene.

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