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119139-56-9

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119139-56-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 119139-56-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,9,1,3 and 9 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 119139-56:
(8*1)+(7*1)+(6*9)+(5*1)+(4*3)+(3*9)+(2*5)+(1*6)=129
129 % 10 = 9
So 119139-56-9 is a valid CAS Registry Number.

119139-56-9Downstream Products

119139-56-9Relevant articles and documents

A new synthesis of 3-oxosapriparaquinone, a diterpene from Salvia prionitis HANCE (Labiatae)

Matsumoto, Takashi,Takeda, Yoshio,Soh, Kimiko,Matsumura, Hiroyuki,Imai, Sachihiko

, p. 1588 - 1590 (1996)

5,8,11,13-Abietatetraen-3-one (3) and its 12-methoxy derivative (7) were oxidized to the corresponding 3,7-diones, which were rearranged respectively into 2-isopropyl-6-methyl-5-(4-methyl-3-oxopentyl)naphthalene (6) and its 12-methoxy derivative (10) by sodium borohydride reduction and subsequent dehydration with boron trifluoride etherate. Compound 10 was further converted into 3-oxosapriparaquinone (1) via 5-(3-acetoxy-4- methylpentyl)-2-isopropyl-6-methyl-3,4-naphthoquinone (14).

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