77139-23-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77139-23-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,1,3 and 9 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 77139-23:
(7*7)+(6*7)+(5*1)+(4*3)+(3*9)+(2*2)+(1*3)=142
142 % 10 = 2
So 77139-23-2 is a valid CAS Registry Number.
InChI:InChI=1/C28H32O17/c1-40-15-6-14-18(12(33)5-13(41-14)9-2-3-10(31)11(32)4-9)21(36)25(15)44-28-26(23(38)20(35)17(8-30)43-28)45-27-24(39)22(37)19(34)16(7-29)42-27/h2-6,16-17,19-20,22-24,26-32,34-39H,7-8H2,1H3/t16-,17-,19+,20-,22+,23+,24-,26-,27+,28+/m1/s1