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121719-96-8

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121719-96-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 121719-96-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,7,1 and 9 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 121719-96:
(8*1)+(7*2)+(6*1)+(5*7)+(4*1)+(3*9)+(2*9)+(1*6)=118
118 % 10 = 8
So 121719-96-8 is a valid CAS Registry Number.

121719-96-8Downstream Products

121719-96-8Relevant articles and documents

Total synthesis of optically active monocrotaline, a carcinogenic pyrrolizidine alkaloid possessing an eleven-membered retronecine dilactone

Niwa, Haruki,Ogawa, Takeshi,Okamoto, Osamu,Yamada, Kiyoyuki

, p. 10531 - 10548 (2007/10/02)

A total synthesis of the natural enantiomer of monocrotaline (1), a representative of carcinogenic pyrrolizidine alkaloids having an 11-membered retronecine dilactone was achieved through regioselective coupling of (+)-retronecine (3) and the optically active protected necic acid 8, the latter being prepared enantioselectively from the meso-diester 11.

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