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75499-78-4

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75499-78-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 75499-78-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,4,9 and 9 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 75499-78:
(7*7)+(6*5)+(5*4)+(4*9)+(3*9)+(2*7)+(1*8)=184
184 % 10 = 4
So 75499-78-4 is a valid CAS Registry Number.

75499-78-4Relevant articles and documents

Chemical Transformation of Protoberberines. Part 10. A Novel Synthesis of Sanguilutine and Dihydrosanguilutine, fully Aromatised 2,3,7,8,10-Pentaoxygenated Benzophenanthridine Alkaloids

Hanaoka, Miyoji,Kobayashi, Nobuyuki,Shimada, Ken-ichi,Mukai, Chisato

, p. 677 - 682 (2007/10/02)

2,3,7,8,10-Pentaoxygenated benzophenanthridine alkaloids, sanguilutine (1) and dihydrosanguilutine (2), were efficiently synthesized from the corresponding 2,3,9,10,12-pentamethoxyprotoberberine (8) through a regioselective C(6)-N bond cleavage, followed by recombination between the original C(6) and C(13) positions of compound (8) according to a biomimetic route.

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