81525-91-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81525-91-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,2 and 5 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81525-91:
(7*8)+(6*1)+(5*5)+(4*2)+(3*5)+(2*9)+(1*1)=129
129 % 10 = 9
So 81525-91-9 is a valid CAS Registry Number.
81525-91-9Relevant articles and documents
STEREOSELECTIVE SYNTHESIS OF (+/-)-DEETHYLASPIDOSPERMIDINE
Natsume, Mitsutaka,Utsunomiya, Iwao
, p. 111 - 115 (2007/10/02)
Conjugate addition of various carbanions to the enones 2 afforded 2,3-trans substituted piperidinones 3. (+/-)-Deethylaspidospermidine (12a) was synthesized from 1b via 5b, 7, and 11a in the stereoselective manner.
