16958-31-9 Usage
Occurrence
The roots of Senecio orthonnae yield this pyrrolizidine alkaloid.
Check Digit Verification of cas no
The CAS Registry Mumber 16958-31-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,9,5 and 8 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 16958-31:
(7*1)+(6*6)+(5*9)+(4*5)+(3*8)+(2*3)+(1*1)=139
139 % 10 = 9
So 16958-31-9 is a valid CAS Registry Number.
InChI:InChI=1/C21H31NO9/c1-12-10-21(28,13(2)23)19(27)30-16-7-9-22(5)8-6-15(17(16)25)11-29-18(26)20(12,4)31-14(3)24/h6,12-13,16,23,28H,7-11H2,1-5H3/b15-6-/t12-,13?,16-,20-,21?/m1/s1