81855-31-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81855-31-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,8,5 and 5 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81855-31:
(7*8)+(6*1)+(5*8)+(4*5)+(3*5)+(2*3)+(1*1)=144
144 % 10 = 4
So 81855-31-4 is a valid CAS Registry Number.
InChI:InChI=1/C18H23NO7/c1-10-18(26-10)8-17(9-24-17)16(2,22)14(20)23-7-11-3-5-19-6-4-12(13(11)19)25-15(18)21/h3,10,12-13,22H,4-9H2,1-2H3/t10-,12+,13+,16-,17-,18?/m0/s1
81855-31-4Relevant articles and documents
Epoxidation of pyrrolizidine alkaloids. (1). Chemical conversion of seneciphylline and jacozine to senecicannabine
Asada,Furuya
, p. 4616 - 4619 (2007/10/02)
A new pyrrolizidine alkaloid, senecicannabine (4) which was isolated from Senecio cannabifolius was derived from seneciphylline (1) by oxidation with performic acid. The transformation of jacozine (6) to 4 was also carried out with performic acid, and the configuration of the epoxide ring of 6 was chemically determined to be 15S and 20S.
