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81943-91-1

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81943-91-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81943-91-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,9,4 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81943-91:
(7*8)+(6*1)+(5*9)+(4*4)+(3*3)+(2*9)+(1*1)=151
151 % 10 = 1
So 81943-91-1 is a valid CAS Registry Number.
InChI:InChI=1/C40H62N10O10/c1-8-9-11-27(49-39(58)60-40(5,6)7)35(55)47-28(15-16-31(41)51)36(56)48-29(18-22(2)3)34(54)45-21-32(52)50-37(57)26(12-10-17-44-38(42)43)46-24-13-14-25-23(4)19-33(53)59-30(25)20-24/h13-14,19-20,22,26-29,46H,8-12,15-18,21H2,1-7H3,(H2,41,51)(H,45,54)(H,47,55)(H,48,56)(H,49,58)(H4,42,43,44)(H,50,52,57)/t26-,27-,28-,29-/m0/s1

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