Exact Mass: 451.2067
Exact Mass Matches: 451.2067
Found 109 metabolites which its exact mass value is equals to given mass value 451.2067,
within given mass tolerance error 0.0002 dalton. Try search metabolite list with more accurate mass tolerance error
4.0E-5 dalton.
1-Hydroxytrimazosin
2-Hydroxy-2-hydroxymethylpropyl-4(4-amino-6,7,8-trimethoxy-2-quinazolinyl)-1-piperazine carboxylic acid
Ala Ala Gln Tyr
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-aminopropanamido]propanamido]-4-carbamoylbutanamido]-3-(4-hydroxyphenyl)propanoic acid
Ala Ala Tyr Gln
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-aminopropanamido]propanamido]-3-(4-hydroxyphenyl)propanamido]-4-carbamoylbutanoic acid
Ala Phe Asn Thr
(2S,3R)-2-[(2S)-2-[(2S)-2-[(2S)-2-aminopropanamido]-3-phenylpropanamido]-3-carbamoylpropanamido]-3-hydroxybutanoic acid
Ala Phe Gln Ser
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-aminopropanamido]-3-phenylpropanamido]-4-carbamoylbutanamido]-3-hydroxypropanoic acid
Ala Phe Ser Gln
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-aminopropanamido]-3-phenylpropanamido]-3-hydroxypropanamido]-4-carbamoylbutanoic acid
Ala Phe Thr Asn
(2S)-2-[(2S,3R)-2-[(2S)-2-[(2S)-2-aminopropanamido]-3-phenylpropanamido]-3-hydroxybutanamido]-3-carbamoylpropanoic acid
Ala Asn Phe Thr
(2S,3R)-2-[(2S)-2-[(2S)-2-[(2S)-2-aminopropanamido]-3-carbamoylpropanamido]-3-phenylpropanamido]-3-hydroxybutanoic acid
Ala Asn Thr Phe
(2S)-2-[(2S,3R)-2-[(2S)-2-[(2S)-2-aminopropanamido]-3-carbamoylpropanamido]-3-hydroxybutanamido]-3-phenylpropanoic acid
Ala Gln Ala Tyr
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-aminopropanamido]-4-carbamoylbutanamido]propanamido]-3-(4-hydroxyphenyl)propanoic acid
Ala Gln Phe Ser
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-aminopropanamido]-4-carbamoylbutanamido]-3-phenylpropanamido]-3-hydroxypropanoic acid
Ala Gln Ser Phe
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-aminopropanamido]-4-carbamoylbutanamido]-3-hydroxypropanamido]-3-phenylpropanoic acid
Ala Gln Tyr Ala
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-aminopropanamido]-4-carbamoylbutanamido]-3-(4-hydroxyphenyl)propanamido]propanoic acid
Ala Ser Phe Gln
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-aminopropanamido]-3-hydroxypropanamido]-3-phenylpropanamido]-4-carbamoylbutanoic acid
Ala Ser Gln Phe
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-aminopropanamido]-3-hydroxypropanamido]-4-carbamoylbutanamido]-3-phenylpropanoic acid
Ala Thr Phe Asn
(2S)-2-[(2S)-2-[(2S,3R)-2-[(2S)-2-aminopropanamido]-3-hydroxybutanamido]-3-phenylpropanamido]-3-carbamoylpropanoic acid
Ala Thr Asn Phe
(2S)-2-[(2S)-2-[(2S,3R)-2-[(2S)-2-aminopropanamido]-3-hydroxybutanamido]-3-carbamoylpropanamido]-3-phenylpropanoic acid
Ala Tyr Ala Gln
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-aminopropanamido]-3-(4-hydroxyphenyl)propanamido]propanamido]-4-carbamoylbutanoic acid
Ala Tyr Gln Ala
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-aminopropanamido]-3-(4-hydroxyphenyl)propanamido]-4-carbamoylbutanamido]propanoic acid
Phe Ala Asn Thr
(2S,3R)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-phenylpropanamido]propanamido]-3-carbamoylpropanamido]-3-hydroxybutanoic acid
Phe Ala Gln Ser
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-phenylpropanamido]propanamido]-4-carbamoylbutanamido]-3-hydroxypropanoic acid
Phe Ala Ser Gln
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-phenylpropanamido]propanamido]-3-hydroxypropanamido]-4-carbamoylbutanoic acid
Phe Ala Thr Asn
(2S)-2-[(2S,3R)-2-[(2S)-2-[(2S)-2-amino-3-phenylpropanamido]propanamido]-3-hydroxybutanamido]-3-carbamoylpropanoic acid
Phe Gly Gln Thr
(2S,3R)-2-[(2S)-2-{2-[(2S)-2-amino-3-phenylpropanamido]acetamido}-4-carbamoylbutanamido]-3-hydroxybutanoic acid
Phe Gly Thr Gln
(2S)-2-[(2S,3R)-2-{2-[(2S)-2-amino-3-phenylpropanamido]acetamido}-3-hydroxybutanamido]-4-carbamoylbutanoic acid
Phe Asn Ala Thr
(2S,3R)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-phenylpropanamido]-3-carbamoylpropanamido]propanamido]-3-hydroxybutanoic acid
Phe Asn Thr Ala
(2S)-2-[(2S,3R)-2-[(2S)-2-[(2S)-2-amino-3-phenylpropanamido]-3-carbamoylpropanamido]-3-hydroxybutanamido]propanoic acid
Phe Gln Ala Ser
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-phenylpropanamido]-4-carbamoylbutanamido]propanamido]-3-hydroxypropanoic acid
Phe Gln Gly Thr
(2S,3R)-2-{2-[(2S)-2-[(2S)-2-amino-3-phenylpropanamido]-4-carbamoylbutanamido]acetamido}-3-hydroxybutanoic acid
Phe Gln Ser Ala
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-phenylpropanamido]-4-carbamoylbutanamido]-3-hydroxypropanamido]propanoic acid
Phe Gln Thr Gly
2-[(2S,3R)-2-[(2S)-2-[(2S)-2-amino-3-phenylpropanamido]-4-carbamoylbutanamido]-3-hydroxybutanamido]acetic acid
Phe Ser Ala Gln
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-phenylpropanamido]-3-hydroxypropanamido]propanamido]-4-carbamoylbutanoic acid
Phe Ser Gln Ala
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-phenylpropanamido]-3-hydroxypropanamido]-4-carbamoylbutanamido]propanoic acid
Phe Thr Ala Asn
(2S)-2-[(2S)-2-[(2S,3R)-2-[(2S)-2-amino-3-phenylpropanamido]-3-hydroxybutanamido]propanamido]-3-carbamoylpropanoic acid
Phe Thr Gly Gln
(2S)-2-{2-[(2S,3R)-2-[(2S)-2-amino-3-phenylpropanamido]-3-hydroxybutanamido]acetamido}-4-carbamoylbutanoic acid
Phe Thr Asn Ala
(2S)-2-[(2S)-2-[(2S,3R)-2-[(2S)-2-amino-3-phenylpropanamido]-3-hydroxybutanamido]-3-carbamoylpropanamido]propanoic acid
Phe Thr Gln Gly
2-[(2S)-2-[(2S,3R)-2-[(2S)-2-amino-3-phenylpropanamido]-3-hydroxybutanamido]-4-carbamoylbutanamido]acetic acid
Gly Phe Gln Thr
(2S,3R)-2-[(2S)-2-[(2S)-2-(2-aminoacetamido)-3-phenylpropanamido]-4-carbamoylbutanamido]-3-hydroxybutanoic acid
Gly Phe Thr Gln
(2S)-2-[(2S,3R)-2-[(2S)-2-(2-aminoacetamido)-3-phenylpropanamido]-3-hydroxybutanamido]-4-carbamoylbutanoic acid
Gly Asn Val Tyr
(2S)-2-[(2S)-2-[(2S)-2-(2-aminoacetamido)-3-carbamoylpropanamido]-3-methylbutanamido]-3-(4-hydroxyphenyl)propanoic acid
Gly Asn Tyr Val
(2S)-2-[(2S)-2-[(2S)-2-(2-aminoacetamido)-3-carbamoylpropanamido]-3-(4-hydroxyphenyl)propanamido]-3-methylbutanoic acid
Gly Gln Phe Thr
(2S,3R)-2-[(2S)-2-[(2S)-2-(2-aminoacetamido)-4-carbamoylbutanamido]-3-phenylpropanamido]-3-hydroxybutanoic acid
Gly Gln Thr Phe
(2S)-2-[(2S,3R)-2-[(2S)-2-(2-aminoacetamido)-4-carbamoylbutanamido]-3-hydroxybutanamido]-3-phenylpropanoic acid
Gly Thr Phe Gln
(2S)-2-[(2S)-2-[(2S,3R)-2-(2-aminoacetamido)-3-hydroxybutanamido]-3-phenylpropanamido]-4-carbamoylbutanoic acid
Gly Thr Gln Phe
(2S)-2-[(2S)-2-[(2S,3R)-2-(2-aminoacetamido)-3-hydroxybutanamido]-4-carbamoylbutanamido]-3-phenylpropanoic acid
Gly Val Asn Tyr
(2S)-2-[(2S)-2-[(2S)-2-(2-aminoacetamido)-3-methylbutanamido]-3-carbamoylpropanamido]-3-(4-hydroxyphenyl)propanoic acid
Gly Val Tyr Asn
(2S)-2-[(2S)-2-[(2S)-2-(2-aminoacetamido)-3-methylbutanamido]-3-(4-hydroxyphenyl)propanamido]-3-carbamoylpropanoic acid
Gly Tyr Asn Val
(2S)-2-[(2S)-2-[(2S)-2-(2-aminoacetamido)-3-(4-hydroxyphenyl)propanamido]-3-carbamoylpropanamido]-3-methylbutanoic acid
Gly Tyr Val Asn
(2S)-2-[(2S)-2-[(2S)-2-(2-aminoacetamido)-3-(4-hydroxyphenyl)propanamido]-3-methylbutanamido]-3-carbamoylpropanoic acid
Asn Ala Phe Thr
(2S,3R)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]propanamido]-3-phenylpropanamido]-3-hydroxybutanoic acid
Asn Ala Thr Phe
(2S)-2-[(2S,3R)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]propanamido]-3-hydroxybutanamido]-3-phenylpropanoic acid
Asn Phe Ala Thr
(2S,3R)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-3-phenylpropanamido]propanamido]-3-hydroxybutanoic acid
Asn Phe Thr Ala
(2S)-2-[(2S,3R)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-3-phenylpropanamido]-3-hydroxybutanamido]propanoic acid
Asn Gly Val Tyr
(2S)-2-[(2S)-2-{2-[(2S)-2-amino-3-carbamoylpropanamido]acetamido}-3-methylbutanamido]-3-(4-hydroxyphenyl)propanoic acid
Asn Gly Tyr Val
(2S)-2-[(2S)-2-{2-[(2S)-2-amino-3-carbamoylpropanamido]acetamido}-3-(4-hydroxyphenyl)propanamido]-3-methylbutanoic acid
Asn Thr Ala Phe
(2S)-2-[(2S)-2-[(2S,3R)-2-[(2S)-2-amino-3-carbamoylpropanamido]-3-hydroxybutanamido]propanamido]-3-phenylpropanoic acid
Asn Thr Phe Ala
(2S)-2-[(2S)-2-[(2S,3R)-2-[(2S)-2-amino-3-carbamoylpropanamido]-3-hydroxybutanamido]-3-phenylpropanamido]propanoic acid
Asn Val Gly Tyr
(2S)-2-{2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-3-methylbutanamido]acetamido}-3-(4-hydroxyphenyl)propanoic acid
Asn Val Tyr Gly
2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-3-methylbutanamido]-3-(4-hydroxyphenyl)propanamido]acetic acid
Asn Tyr Gly Val
(2S)-2-{2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-3-(4-hydroxyphenyl)propanamido]acetamido}-3-methylbutanoic acid
Asn Tyr Val Gly
2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-carbamoylpropanamido]-3-(4-hydroxyphenyl)propanamido]-3-methylbutanamido]acetic acid
Gln Ala Ala Tyr
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]propanamido]propanamido]-3-(4-hydroxyphenyl)propanoic acid
Gln Ala Phe Ser
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]propanamido]-3-phenylpropanamido]-3-hydroxypropanoic acid
Gln Ala Ser Phe
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]propanamido]-3-hydroxypropanamido]-3-phenylpropanoic acid
Gln Ala Tyr Ala
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]propanamido]-3-(4-hydroxyphenyl)propanamido]propanoic acid
Gln Phe Ala Ser
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-phenylpropanamido]propanamido]-3-hydroxypropanoic acid
Gln Phe Gly Thr
(2S,3R)-2-{2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-phenylpropanamido]acetamido}-3-hydroxybutanoic acid
Gln Phe Ser Ala
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-phenylpropanamido]-3-hydroxypropanamido]propanoic acid
Gln Phe Thr Gly
2-[(2S,3R)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-phenylpropanamido]-3-hydroxybutanamido]acetic acid
Gln Gly Phe Thr
(2S,3R)-2-[(2S)-2-{2-[(2S)-2-amino-4-carbamoylbutanamido]acetamido}-3-phenylpropanamido]-3-hydroxybutanoic acid
Gln Gly Thr Phe
(2S)-2-[(2S,3R)-2-{2-[(2S)-2-amino-4-carbamoylbutanamido]acetamido}-3-hydroxybutanamido]-3-phenylpropanoic acid
Gln Ser Ala Phe
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-hydroxypropanamido]propanamido]-3-phenylpropanoic acid
Gln Ser Phe Ala
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-hydroxypropanamido]-3-phenylpropanamido]propanoic acid
Gln Thr Phe Gly
2-[(2S)-2-[(2S,3R)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-hydroxybutanamido]-3-phenylpropanamido]acetic acid
Gln Thr Gly Phe
(2S)-2-{2-[(2S,3R)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-hydroxybutanamido]acetamido}-3-phenylpropanoic acid
Gln Tyr Ala Ala
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-(4-hydroxyphenyl)propanamido]propanamido]propanoic acid
Ser Ala Phe Gln
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-hydroxypropanamido]propanamido]-3-phenylpropanamido]-4-carbamoylbutanoic acid
Ser Ala Gln Phe
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-hydroxypropanamido]propanamido]-4-carbamoylbutanamido]-3-phenylpropanoic acid
Ser Phe Ala Gln
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-hydroxypropanamido]-3-phenylpropanamido]propanamido]-4-carbamoylbutanoic acid
Ser Phe Gln Ala
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-hydroxypropanamido]-3-phenylpropanamido]-4-carbamoylbutanamido]propanoic acid
Ser Gln Ala Phe
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-hydroxypropanamido]-4-carbamoylbutanamido]propanamido]-3-phenylpropanoic acid
Ser Gln Phe Ala
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-hydroxypropanamido]-4-carbamoylbutanamido]-3-phenylpropanamido]propanoic acid
Thr Ala Phe Asn
(2S)-2-[(2S)-2-[(2S)-2-[(2S,3R)-2-amino-3-hydroxybutanamido]propanamido]-3-phenylpropanamido]-3-carbamoylpropanoic acid
Thr Ala Asn Phe
(2S)-2-[(2S)-2-[(2S)-2-[(2S,3R)-2-amino-3-hydroxybutanamido]propanamido]-3-carbamoylpropanamido]-3-phenylpropanoic acid
Thr Phe Ala Asn
(2S)-2-[(2S)-2-[(2S)-2-[(2S,3R)-2-amino-3-hydroxybutanamido]-3-phenylpropanamido]propanamido]-3-carbamoylpropanoic acid
Thr Phe Gly Gln
(2S)-2-{2-[(2S)-2-[(2S,3R)-2-amino-3-hydroxybutanamido]-3-phenylpropanamido]acetamido}-4-carbamoylbutanoic acid
Thr Phe Asn Ala
(2S)-2-[(2S)-2-[(2S)-2-[(2S,3R)-2-amino-3-hydroxybutanamido]-3-phenylpropanamido]-3-carbamoylpropanamido]propanoic acid
Thr Phe Gln Gly
2-[(2S)-2-[(2S)-2-[(2S,3R)-2-amino-3-hydroxybutanamido]-3-phenylpropanamido]-4-carbamoylbutanamido]acetic acid
Thr Gly Phe Gln
(2S)-2-[(2S)-2-{2-[(2S,3R)-2-amino-3-hydroxybutanamido]acetamido}-3-phenylpropanamido]-4-carbamoylbutanoic acid
Thr Gly Gln Phe
(2S)-2-[(2S)-2-{2-[(2S,3R)-2-amino-3-hydroxybutanamido]acetamido}-4-carbamoylbutanamido]-3-phenylpropanoic acid
Thr Asn Ala Phe
(2S)-2-[(2S)-2-[(2S)-2-[(2S,3R)-2-amino-3-hydroxybutanamido]-3-carbamoylpropanamido]propanamido]-3-phenylpropanoic acid
Thr Asn Phe Ala
(2S)-2-[(2S)-2-[(2S)-2-[(2S,3R)-2-amino-3-hydroxybutanamido]-3-carbamoylpropanamido]-3-phenylpropanamido]propanoic acid
Thr Gln Phe Gly
2-[(2S)-2-[(2S)-2-[(2S,3R)-2-amino-3-hydroxybutanamido]-4-carbamoylbutanamido]-3-phenylpropanamido]acetic acid
Thr Gln Gly Phe
(2S)-2-{2-[(2S)-2-[(2S,3R)-2-amino-3-hydroxybutanamido]-4-carbamoylbutanamido]acetamido}-3-phenylpropanoic acid
Val Gly Asn Tyr
(2S)-2-[(2S)-2-{2-[(2S)-2-amino-3-methylbutanamido]acetamido}-3-carbamoylpropanamido]-3-(4-hydroxyphenyl)propanoic acid
Val Gly Tyr Asn
(2S)-2-[(2S)-2-{2-[(2S)-2-amino-3-methylbutanamido]acetamido}-3-(4-hydroxyphenyl)propanamido]-3-carbamoylpropanoic acid
Val Asn Gly Tyr
(2S)-2-{2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-3-carbamoylpropanamido]acetamido}-3-(4-hydroxyphenyl)propanoic acid
Val Asn Tyr Gly
2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-3-carbamoylpropanamido]-3-(4-hydroxyphenyl)propanamido]acetic acid
Val Tyr Gly Asn
(2S)-2-{2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-3-(4-hydroxyphenyl)propanamido]acetamido}-3-carbamoylpropanoic acid
Val Tyr Asn Gly
2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-3-(4-hydroxyphenyl)propanamido]-3-carbamoylpropanamido]acetic acid
Tyr Ala Ala Gln
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]propanamido]propanamido]-4-carbamoylbutanoic acid
Tyr Ala Gln Ala
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]propanamido]-4-carbamoylbutanamido]propanoic acid
Tyr Gly Asn Val
(2S)-2-[(2S)-2-{2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]acetamido}-3-carbamoylpropanamido]-3-methylbutanoic acid
Tyr Gly Val Asn
(2S)-2-[(2S)-2-{2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]acetamido}-3-methylbutanamido]-3-carbamoylpropanoic acid
Tyr Asn Gly Val
(2S)-2-{2-[(2S)-2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]-3-carbamoylpropanamido]acetamido}-3-methylbutanoic acid
Tyr Asn Val Gly
2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]-3-carbamoylpropanamido]-3-methylbutanamido]acetic acid
Tyr Gln Ala Ala
(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]-4-carbamoylbutanamido]propanamido]propanoic acid
Tyr Val Gly Asn
(2S)-2-{2-[(2S)-2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]-3-methylbutanamido]acetamido}-3-carbamoylpropanoic acid
Tyr Val Asn Gly
2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]-3-methylbutanamido]-3-carbamoylpropanamido]acetic acid
